M4maths Previous Puzzles

21 Nov 2013 Field Area

Area of a field is 198 square meter. Convert it into square inch?
Given that 1 inch = 2.54 centimeter.

OPtion

1) 6387084
2) 0.0639
3) 2514600
4) 153450.3
5) 198
6) 306900.6
7) 251.46
8) 1519.16
9) 15191580.38
10) 3897.64

Solution

Area = 198 sq. m.
= 198*100*100 sq. cm.
= 1980000/(2.54*2.54)
= 306900.6
option 6)

Correct Option: 6 Best Solution (42)

Suman   11 years AGO

198 square meter
=198*1 meter*1 meter
=198*100 cm *100 cm
=198*100*100*(1/2.54)*(1/2.54)
=306900.6

Like? Yes (7) | No (1)  

Udhaya kumar   11 years AGO

1 inch = 2.54 cm = 0.0254m
1m= 1/0.0254 inch= 39.37 inch
1m^2= 39.37^2= 1549.99 sq.in
198m^2= 1549.99*198= 306900 sq.in.......

Like? Yes (3) | No (1)  

rohit kumar   11 years AGO

area of field=198 m^2=(198*10000)cm^2
2.54*2.54 cm^2=1 inch^2
i.e 6.4516 cm^2=1 inch^2
so,
area (in square inch)=1980000/6.4516=306900.6 ...ANS

Like? Yes (3) | No (1)  

ShAg   11 years AGO

1 sq mt = 1550 sq in

Like? Yes (1) | No   

Jyothi   11 years AGO

1 m = 1/0.0254 inch
1 m^2 = (39.37)^2 inch^2
198*39.37*39.37=306900.6

Like? Yes (1) | No   

Harjit kaur   11 years AGO

1"=2.54cm
1cm=1/2.54inch
1/100m=1/2.54inch
1/10000m^2=(1/2.54^2)inch^2
198m^2=(10000*198)/2.54*2.54
=306900.6inch^2

Like? Yes (2) | No (1)  

Rajeswar guin   11 years AGO

198sqm=1407cm=1407/2.54=553.94inch
Sqre both side=306900.6sqinchh

Like? Yes (2) | No (1)  

Aditya Verma   11 years AGO

area=198 m^2 = 198x100x100 cm^2
=1980000 cm^2 = 1980000/2.54^2 inc^2= 306900.6 inc^2

Like? Yes (1) | No   

achyuth   11 years AGO

m^2=10000cm
198*10000=1980000cm
but inch=2.54cm
1980000/(2.54)^2
ans=306900.6

Like? Yes (2) | No (1)  

ChinnaChowdaiah   11 years AGO

1 m^2= 10000 cm^2
1 cm= 1/2.54 inch.
so 1980000/(2.54)^2= 306900.6

Like? Yes (2) | No (1)  

DHIRENDRA    11 years AGO

Area of field=198 square meter
198*100*100 square centimeter
1 inch=2.54 centimeter
1 square inch=2.54*2.54 square centimeter
1 square centimeter =1/2.54*2.54 square inch
198*100*100 square centimeter=198*100*100/(2.54*2.54) square inch
= 306900.6 square inch

Like? Yes (2) | No (1)  

prakash kumar   11 years AGO

198 sq m=1980000 sq cm
now,2.54 cm=1 inch
so, 1980000 sq cm=1980000/(2.54)^2
=306900.61 sq inch

Like? Yes (1) | No   

himani sikarwar   11 years AGO

198 square meter=1980000 square centimeter
1980000/(2.54*2.54)=306900.6138 square inch
ans=306900 square inch

Like? Yes (1) | No   

RAHUL KUMAR   11 years AGO

1m=100cm so 1m^2= 10000cm^2
so 198 m^2=1980000 cm^2
thus 1980000cm^2=1980000/2.54^2=306900.6inch^2

Like? Yes (2) | No (1)  

Grishma Shah   11 years AGO

1 inch^2 = 0.00064516 m^2
Hence, 198 m^2 = 198/0.00064516
= 306900.6 inch^2

Like? Yes (2) | No (1)  

IFFAT IRAM   11 years AGO

198*10000/2.54^2
306900.61

Like? Yes (2) | No (1)  

Neha verma   11 years AGO

1m=100cm
so first convert meter into centimeter s0 1980000cm2
now 1cm=(1/2.54)inch
so into square inch change will be
(1980000)*(1/2.54)*(1/2.54)=306900.61 square inch

Like? Yes (1) | No   

kiran gupta   11 years AGO

area=198 m^2
area=1980000cm^2
area=1980000/(2.51*2.51)

Like? Yes (1) | No   

C. Veda Kumar   11 years AGO

1 inch=2.54cm.. 1square inch is 6.4516square cemtimeter... by this we can do this problem

Like? Yes (1) | No   

Rajulapati Tirumala Rao   11 years AGO

Answer = (198)*(39.37007874^2) = 306900.6138
[Since, 1meter = 39.37007874inches
=> 1square meter = 39.37007874^2 square inches.
Hence, the answer]

Like? Yes (1) | No   

Prabhat Yadav   11 years AGO

1 m^2 = 1550.0031000062 sq in.
thus.198 m^2 have=198*1550.0031000062
=306900.6

Like? Yes (1) | No   

Devendra Marghade   11 years AGO

100 cm= 1 m, so 1 inch(=2.54 cm)=2.54/100 m.
Now [(2.54/100)m]^2=1 inch^2
So 198 m^2= 198/(2.54/100)^2 inch^2
=198*100*100/(2.54*2.54) inch^2
=306900.6 inch^2

Like? Yes (1) | No (1)  

Bingumalla Abinay   11 years AGO

198*100*100/2.51*2.54

1m = 100 cm

Like? Yes (1) | No (1)  

susmit   11 years AGO

1m=100cm
so 198m^2=1980000cm^2
1inch=2.54cm
so 1inch^2=2.54cm^2=6.4516cm^2
so 198m^2=1980000/6.4516 inch^2
=306900.6 inch^2
option no. (6)

Like? Yes (1) | No (1)  

Rajasekhar Reddy   11 years AGO

1 square inch = 6.4516*10^-4 square meter

198 square meter = 198/(6.4516*10^-4) = 306900.6 square inch

Like? Yes (1) | No (1)  

Rahul Gupta   11 years AGO

1 mt = 39.37 inch
198sqmt = 198*39.37*39.37
=306900.6
ANS 6.

Like? Yes (1) | No (1)  

PINKY   11 years AGO

area in cm sqr=198*10000
now 1 cm = 1/2.54 inch
therefore, area in inch sqr=
(198*10000)/ (2.54*2.54)
=306900.6 inch sqr

Like? Yes (1) | No (1)  

Sushil Singh   11 years AGO

198 m² ( square meter )
306 900.61 380 sq in ( square inch )

Like? Yes (1) | No (1)  

kumar sundram   11 years AGO

198 square meter = (198*(100)^2)/2.54^2=306900.6138 square 1nch.

Like? Yes (1) | No (1)  

Anantharaman   11 years AGO

1 square meter = 1550 square inches

so area of field 198 square meter = 198 * 1550 square inches

=> 306900.6 (approximately)

Option 6

Like? Yes (1) | No (1)  

Ann Mary Jolly   11 years AGO

Ans: 6) 306900.6
1 inch = 2.54cm = 2.54/100 metres
=> 1metre = 100/2.54 inches
Therefore 198 sq.metres = 198*(100/2.54)*(100/2.54)
= 306900.61

Like? Yes (1) | No (1)  

RAKESH   11 years AGO

1 inch = 2.54 cm =.0254m
or 1m =1/.0254 inch
or 1m^2=(1/.0254)^2 inch^2
so 198m^2=198*(1/.0254)^2=306900.6
option (6)

Like? Yes (1) | No (1)  

Gautham Sarang   11 years AGO

198 m^2= (198/(.02540^2))

Like? Yes (1) | No (1)  

Chandni Maurya   11 years AGO

ans=306,900.6 inch sq.
198 m sq. =198 (100 cm)sq. =1980000 cm sq.
1980000 cm sq. = 1980000 *(inch/2.54)sq. = 1980000/6.4516 inch sq. = 306,900.6138 inch sq.

Like? Yes (1) | No (1)  

amit bhagat   11 years AGO

1 sq.metre = 1550 sq.inch
so,
198 sq.meter = 1550*198 =306900 sq.inch

Like? Yes (1) | No (1)  

AMIT JAISWAL   11 years AGO

Since in 1 sq.meter we have 1550 sq.inch .

therefore in 198 sq.meter we have = 1550*198 sq.inch

Like? Yes (1) | No (1)  

gowtham   11 years AGO

given
198m^2
1m=100cm
1m2=(100)^2(cm)^2
1inch=2.54cm
(1inch)^2=6.45196(cm)^2
198*(100)^2/6.4516=306900.6138

Like? Yes (1) | No (1)  

vineeth k k   11 years AGO

1 m=100cm
1m=39.37inch
1 m2 =1550inch2
198 m2 =306900

Like? Yes (1) | No (1)  

gaurav garg   11 years AGO

(198*100*100)/(2.54*2.54)
=306900.6

Like? Yes (1) | No (1)  

Tanay Vaishnave   11 years AGO

1980000/(2.54*2.54)

Like? Yes (1) | No (1)  

mukesh   11 years AGO

198*1m*1m
198*100cm*100cm
1980000*(1/2.54)inch*(1/2.54)inch
306900.6

Like? Yes (1) | No (1)  

Keshav Kishlay   11 years AGO

1inch=2.54cm=0.0254m
198sq.m=198/.0006452sq.inch
=306900.6

Like? Yes (1) | No (1)  

20 Nov 2013 Salary Calculate

A man earns Rs. 20000 per month. His salary increases by 1% in every month. What will be his salary after 6 months. Give your solution in integers only.

OPtion

1) 21324
2) 20791
3) 21817
4) 21618
5) 20457
6) 21615
7) 20998
8) 21230
9) 20756
10) 21713

Solution

Reason. After 6 increments his salary is 20000*(101/100)^6 =
= 20000*(1.01)^6 = 21230

Correct Option: 8 Best Solution (59)

vineeth k k   11 years AGO

1st month 20200
2nd month 20402
3rd month 20606
4th month 20812
5th month 21020
6th month 21230

Like? Yes (2) | No   

Bingumalla Abinay   11 years AGO

similar to compound intrest

1.01^6 * 20000=21230.4

Like? Yes (4) | No (3)  

Sumit sahu   11 years AGO

ans.=21230.
every year salary increases by 1%. Which is in 1st yr 200,2nd yr 202,3rd yr 204,4th yr 206,5th yr 208,
6th yr 210(excluding fraction values).
add continuously to man's salary.you will get ans.

Like? Yes (1) | No   

Biplab Mondal   11 years AGO

compound interest 1% at month basis of 6 month that is =20000*(1+1/100)^6=21230(app)

Like? Yes (1) | No   

Neha verma   11 years AGO

1st month salary 20000*1\100=200
20000+200=20200
2nd month salary 20200*1\100=202
20202+202=20402
3rd month salary 20402*1\100=204.02
20402+204=20606
4th month salary 20606*1\100=206.06
20606+206=20812
5th month salary 20812*1\100=208
20812+208=21020
6th month salary 21020*1\100=210
21020+210=21230

Like? Yes (1) | No   

Sonu Bulani   11 years AGO

20000+6% of 20000 is the answer is =21200.......so for this very near solution is 21230 so option 8 is correct

Like? Yes (1) | No   

prakash kumar   11 years AGO

in 1st month 1%salary increase=20200
in 2nd month 1%salary increase of 20200=20402
similarly in 6th month salary increase=21230

Like? Yes (1) | No   

G.Madhumitha   11 years AGO

His salary in 1st month is 1% of 20000 = 20200
2nd month is 1% of 20200 = 20402
3rd month is 1% of 20402 = 20606
4th month is 1% of 20606 = 20812
5th month is 1% of 20812 = 21020
6th month is !% of 21020 = 21230

Like? Yes (1) | No   

Nidhi Raturi   11 years AGO

when calculated the increase in salary per month for 6 month the answer in integer terms comes out to be 21230

Like? Yes (1) | No   

A.RAMAKRISHNAN   11 years AGO

1st month 20000 + 200
2nd month 20202 + 202
3rd month 20402 + 204
4th month 20606 + 206
5th month 20808 + 208
6th month 21016 + 210
His salary 1st month 20000 after 6 months 1230 total 21230

Like? Yes (1) | No   

himani sikarwar   11 years AGO

1% of 20000=200
after one month salary will=20200 Rs.
now 1% of 20200=202
after second month salary becom=20402 Rs
similarily
after 6 months
salary become=21230.40 Rs
ans=21230 Rs(8)

Like? Yes (1) | No   

Diksha   11 years AGO

1% of 20,000 = 200
after 1st month salary 20,000+200=20200
after 2nd month salary 20,200+202=20402
same calculate for 6 months,
so final salary will be 21230.

Like? Yes (1) | No   

ramakrishna   11 years AGO

here percentage increase 1% by for every month.
20000*(101/100)*(101/100)*(101/100)*(101/100)*(101/100)*(101/100)=21230

Like? Yes (1) | No   

kiran gupta   11 years AGO

after 1st month 20000*1/100=200
2nd month 20200*0.01=202
3rd month 20402*0.01=204.02
4th month 20606*0.01=206.06
5th month 20812.08*0.01=208.12
6th month 21020.20*0.01=210.30
salary after 6 month 21020+210.20=21230

Like? Yes (1) | No   

Rajulapati Tirumala Rao   11 years AGO

Answer = (20000)*(1.01^6) = 21230.40301
[since 1 percent increase in x = (x)+(x/100) = 1.01x
Hence for six Years, salary = (1.01^6)*(x)].

Like? Yes (1) | No   

Lavankumar Reddy   11 years AGO

First Month Total = 20200
Second Month Total = 20402
Third Month Total = 20606.02
Fourth Month Total = 20812.0802
Fifth Month Total = 21020.201
Then Sixth Month Total = 21230.40301

Like? Yes (2) | No (2)  

Suman   11 years AGO

Here initial salary was 2000.....Every month its increases by 1% so...after 6 months it will be

20000*(1.01)^6=21230

Like? Yes (2) | No (2)  

Bharat Bhushan Jha   11 years AGO

total=p*(1+r/100)^n
hare p=20000
r=1
n=6
total=21230

Like? Yes (1) | No (1)  

Rashmi bharti   11 years AGO

increase would be like
200,202,204,206....so on
so salary would be 21230.

Like? Yes (1) | No (1)  

Rajasekhar Reddy   11 years AGO

After 6 months his salary is
20000*((101/100)^6) = 21230

Like? Yes (2) | No (2)  

susmit   11 years AGO

2000*(1+1/100)^6
= 21230.4030 = 21230(in integers )
Hence, option no. (8)

Like? Yes (2) | No (3)  

b.s.venkatesh   11 years AGO

20000*101/100=20200
lly 20200*101/100
do 6 times we get 21230

Like? Yes (1) | No (2)  

Devendra Marghade   11 years AGO

20000*[1+(1/100)]^6
=20000*(1.01)^6
=20000*1.0615
=21230

Like? Yes (1) | No (2)  

ANUPAM KUMAR   11 years AGO

20000(1+1/100)^6=21230

Like? Yes (1) | No (2)  

Gundavarapu Parameswari   11 years AGO

p(1+(R/100))^n
20000(1+0.01)^6
21230

Like? Yes (1) | No (2)  

Mithun Kumar Kesari   11 years AGO

a=2000*(1.01)^6=21230

Like? Yes (2) | No (3)  

Chithra   11 years AGO

1st,2nd,3rd,4th,5th,6th month salary respectively increases 1% 20200,20402,20606,20812,21020,21230

Like? Yes (1) | No (2)  

Janshi   11 years AGO

a man earns Rs.20,000/mon, his salary increases by 1%, so we calculate for every month
(1/100)*20,000=200, thus 200 will be incremented for 1st month salary, therefore, 20,000+200=20,200
thn,
for 2 nd month, 20,200*(1/100)=202
==>20,200+202=20,402
likewise we calculate up to 6 months, thus his salary after 6 months is 21,230

Like? Yes (1) | No (2)  

RAKESH   11 years AGO

20000(1+1/100)^6=21230

Like? Yes (1) | No (2)  

Chandni Maurya   11 years AGO

here we can use the formula of compound interest,
A=P(1+r/100)^n
here,
A=total salary=?,P=20000 Rs, r=1%, n=6 months
A=20000(1+1/100)^6 = 21230.4030 = 21230 Rs

Like? Yes (1) | No (2)  

Anantharaman   11 years AGO

Salary => 20000
20000
1=>20200
2=>20402
3=>20606.02
4=>20812.0802
5=>21020.20
6=>21230.40

Option 8

Like? Yes (1) | No (2)  

Rajeswar guin   11 years AGO

20000*(101/100)^6=21230.4

Like? Yes (1) | No (2)  

Akash Agrawal   11 years AGO

20000+1% of 20000=20200,20200+1% of 20200=20402,
20402+1% of 20402=20606,20606+1% of 20606=20812,20812+1% of 20812=21020,21020+1% of 21020=21230 ans

Like? Yes (1) | No (2)  

ARJYA HALDER   11 years AGO

Increase in 1st month=(20000/100)=200.
Salary after 1st month=(20000+200)=20200.
Increase in 2nd month=(20200/100)=202.
Salary after 2nd month=(20200+202)=20402.
Increase in 3rd month=(20402/100)=204.
Salary after 3rd month=(20402+204)=20606.
Salary after 4th month=20606+(20606/100)=20812.
Salary after 5th month=20812+(20812/100)=21020.
Salary after 6th month=21020+(21020/100)=21230.
therefore option 8 is right.

Like? Yes (1) | No (2)  

VIDIT DWIVEDI   11 years AGO

20000(1+1/100)^6=21230.40301202

Like? Yes (1) | No (2)  

IFFAT IRAM   11 years AGO

20000+200+202+204.02+206.06+208.12+210.20=21230(approx)

Like? Yes (1) | No (2)  

SRIKRISHNAN R   11 years AGO

nearest answer which i calculated

Like? Yes (1) | No (2)  

Spandan   11 years AGO

M6=20000*101/100*101/100...6 times

Like? Yes (1) | No (2)  

Jasmine Khan   11 years AGO

month:- 1 2 3 4 5 6
% inc:- 1 1 1 1 1 1
month:- 1&2 3&4 5&6
% inc:- 2.01 2.01 2.01
month:- 1,2,3&4 5&6
% inc:- 4.060401 2.01
Net % change=6.1520150601
his salary after 6 months=(106.1520150601/100)*20,000=21230.40301202
his salary after 6 months~21230

Like? Yes (2) | No (3)  

HARMEET KAUR   11 years AGO

20000*(1.01)^3 = 21230.4

Like? Yes (1) | No (2)  

SauravTiwari   11 years AGO

First the interest is 200 so total amount is 20200 then calculating the subsequent interest and amount we get 21230

Like? Yes (1) | No (2)  

Harjit kaur   11 years AGO

Interest of 1 month =200 so pay is 20200
". ". 2. ". =202
Interest of respective months is 200,202,204,206,208,210
Increased by 2 each yrs thus his salary after 6 month is
20000+200+202+204+206+208+210=21230

Like? Yes (1) | No (2)  

gaurav garg   11 years AGO

A=P(1+R/100)^N
=20000(1+1/100)^6
=21230

Like? Yes (1) | No (2)  

Keshav Kishlay   11 years AGO

as rate successively increase by 1%
so, by applying C.I formula we get 21230

Like? Yes (1) | No (2)  

Gautham Sarang   11 years AGO

for frst month his salry 20000
aft frst month his salry =20000+.01*20000=ans
ie for simlcity we cn write as ans+ans*.01

aft 6 stes ve got ans =21230.40301
wh is approx = optn num 8

Like? Yes (1) | No (2)  

KALIDASS   11 years AGO

simply solved.(take previous month value as the base value for each operation.)

Like? Yes (1) | No (2)  

vishal barun   11 years AGO

20,000*(1.01)*(1.01)*(1.01)*(1.01)*(1.01)*(1.01)=21230

Like? Yes (2) | No (3)  

kumar sundram   11 years AGO

salary after 6 months=20000*(101/100)^6
=21230

Like? Yes (1) | No (2)  

Parveen Soni   11 years AGO

Simplest way
let final salary (F S)=0
final salary=final salary + increment in current F S
repeat above for six month with 1 % increment

Like? Yes (2) | No (3)  

Gudivada sunitha   11 years AGO

1% of 20000= 200, after 1 month salary is 20200, 1%of 20200 is 202, after 2nd month salary is 20402, 20402+(20402/100)=20602,
20602+(20602/100)=20812,
20812+(20812/100)=21020,
21020+(21020/100)=21230
so six months salary is 21230

Like? Yes (1) | No (2)  

surjeet verma   11 years AGO

20000*1.01*1.01*1.01*1.01*1.01*1.01

Like? Yes (1) | No (2)  

kanampalli himaja   11 years AGO

(20,000*1)/100=200 for 1st month
(20,200*1)/100=202

20402/100=204.02
20606.02/100=206.0602
20812.0802/100=208.120802
21020.201002/100=210.20201002

so ans is 21230.40

Like? Yes (1) | No (2)  

Ayush Rastogi   11 years AGO

1st month salary = 1% of 20000 + 20000=20202
2nd month salary = 1% of 20202 + 20202=20404
3rd month salary = 1% of 20404 + 20404=20606
4th month salary = 1% of 20606 + 20606=20812
5th month salary = 1% of 20812 + 20812=21020
6th month salary = 1% of 21020 + 21020=21230

Like? Yes (1) | No (2)  

sandy   11 years AGO

20000*(101/100)^6

Like? Yes (1) | No (2)  

Anish Kumar Shaw   11 years AGO

amount=20000*(1+1/100)^6

Like? Yes (2) | No (3)  

Udhaya kumar   11 years AGO

add 1% amount in previous amount.....
20000,20200,20402,20606,20812,21020 then 21230...........

Like? Yes (2) | No (3)  

Vinay Sipani    11 years AGO

= 20000[ 1 + (1/100) ]^6

= 20000 * (1.01)^6

= 20000 * (1 + 0.1)^6

= 20000(1 + 6*10^-1 + 15*10^-2 + 20*10^-3 + 15*10^-4 + 6*10^-5 + 10^-6 )

= 21230

Like? Yes (1) | No (3)  

Sushil Singh   11 years AGO

20000+200(1%)=20200(first month)
20200+202=20402(2nd mnth)
20402+204=20606(3rd mnth)
20606+206=20812(4th mnth)
20812+208=21020(5th mnth)
21020+210=21230(6th mnth)

Like? Yes (1) | No (3)  

hemant kumar   11 years AGO

20000*(1.1)^6 =21230

Like? Yes (1) | No (3)  

19 Nov 2013 Find P

P% of P is (P/20) then P is (P is a non zero number)?

OPtion

1) 200
2) 120
3) 100
4) 50
5) 80
6) 50
7) 40
8) 10
9) 5
10) None of these

Solution

P% of P is (P/20)
therefore
P*(P/100) = (P/20)
P/100 = 1/20
P = 100/20
= 5
option 9)

Correct Option: 9 Best Solution (70)

FAISAL RIZWAN   11 years AGO

Given
p% of p=p/100*p
Now (p/100)*p=p/20
On solving we get 5
So option 9 is correct

Like? Yes (7) | No (2)  

Harjit kaur   11 years AGO

(P/100)*p=p/20
P/100=1/20
P=5

Like? Yes (3) | No   

RAKESH   11 years AGO

P% of P =(P/20)
or (p/100)*p=p/20
or p(p-5)=0
p is nonzero so p=5

Like? Yes (4) | No (2)  

kumar sundram   11 years AGO

here, (p^2)/100=p/20
or, p/5=1
thus, p=5.

Like? Yes (2) | No   

rohit kumar   11 years AGO

P*(P/100)=P/20
i.e P=5

Like? Yes (3) | No (2)  

Grishma Shah   11 years AGO

Given
P% of P is P/20
therefore, PxP/100 = P/20
therefore, P/5 = 1
Thus, P = 5

Like? Yes (2) | No (1)  

vigneshwari   11 years AGO

P% of P = p/20
Pxp/100 = p/20
p/5 = 1
p = 5

Like? Yes (2) | No (1)  

Lavankumar Reddy   11 years AGO

5% of 5 is = 0.25
5/20 is = 0.25
So P is = 5

Like? Yes (2) | No (1)  

kiran gupta   11 years AGO

P%of P= P/20
i.e (P*P)/100= P/20
i.e P=5

Like? Yes (1) | No   

Shrikant kumar   11 years AGO

p^2/100=p/20
P/100=1/20
Hence p=5 ans

Like? Yes (1) | No   

julee verma   11 years AGO

5%of P=P*5/100
=P/20
so value of P will be 5

Like? Yes (1) | No   

ananya nandi   11 years AGO

p/100 * p = p/20
p2/ 100 = p/20
p = 100/20 = 5

Like? Yes (1) | No   

ashish   11 years AGO

A/q
p% of p = p/20
(p/100)*p = p/20
on solving we get p=5

Like? Yes (2) | No (1)  

Parthiban C   11 years AGO

p*p/100=p/20
then p=5=ans....

Like? Yes (2) | No (1)  

prakash kumar   11 years AGO

for find p of p% = p/20,
p*p/100 = p/20
p/5 = 1
p =5

Like? Yes (1) | No   

Ritesh Sodwani   11 years AGO

P^2/100=p/20
p=100/20
p=5

Like? Yes (1) | No   

krupanandha   11 years AGO

P*P/100=P/20
P=100/20
P=5

Like? Yes (1) | No   

Mahika Khanna   11 years AGO

P^2/100=P/20

Like? Yes (1) | No   

Saurabh Mishra   11 years AGO

(p*p)/100=p/20=5

Like? Yes (1) | No   

himani sikarwar   11 years AGO

p% of p=(p/20);
p*(p/100)=p/20;
p=5;

Like? Yes (1) | No   

Binod Sharma   11 years AGO

P*P/100=P/20
=> P=5

Like? Yes (1) | No   

praharsha   11 years AGO

5% of 5=0.25
5/20=0.25

Like? Yes (1) | No   

susmit   11 years AGO

P% of P = (P*P)/100 = P^2/100
Now P^2/100 = P/20
Since, P is non zero P/100 = 1/20
So, P = 100/20 = 5.
Hence, option no. (9)

Like? Yes (2) | No (2)  

Mithun Kumar Kesari   11 years AGO

p*p*1/100=p/20
p=5

Like? Yes (1) | No (1)  

Sushil Singh   11 years AGO

given p% of p is p/20
means (p/100)*p=(p/20)
by solvng we get p=5(ans)

Like? Yes (1) | No (1)  

Anantharaman   11 years AGO

Given: (P*P)/100 = P/20
P^2/100 = P/20 => P^2/5 = P
P^2 = 5P => P = 5
Option 9

Like? Yes (2) | No (2)  

krishnapriya   11 years AGO

P/100*P=P/20
so, P=5

Like? Yes (1) | No (1)  

Bingumalla Abinay   11 years AGO

5/20=0.25

5% of 5 is 0.05*5=0.25

Like? Yes (2) | No (2)  

Udhaya kumar   11 years AGO

p*p/100=p/20
p=100/20=5.............

Like? Yes (1) | No (1)  

Keshav Kishlay   11 years AGO

P*P/100=P/20
p=5

Like? Yes (1) | No (1)  

ArunKumar   11 years AGO

p /100 * p = p/20
p = 100/20
p =5

Like? Yes (1) | No (1)  

Jasmine Khan   11 years AGO

(p/100)*p=p/20
p=100/20
p=5

Like? Yes (1) | No (1)  

hemant kumar   11 years AGO

p*p/100 = p/20

p/100 = 1/20

p=100/20 =5

Like? Yes (1) | No (1)  

Saurabh Keshri   11 years AGO

(p^2/100)=p/20
p/5=1
p=5

Like? Yes (1) | No (1)  

Mohit Garg   11 years AGO

because p*p/100=p/20
then p=5

Like? Yes (1) | No (1)  

PREETY KUMARI   11 years AGO

p^2/100=p/20
-> p/10=1/2
-> p=5

Like? Yes (1) | No (1)  

IFFAT IRAM   11 years AGO

P^2/100=P/20
P=5

Like? Yes (1) | No (1)  

Anuj kumar   11 years AGO

p/100*p=p/20
=>5

Like? Yes (1) | No (1)  

Muhammad Nadeem Haider Naseem   11 years AGO

P/100*P=P/20
P=5

Like? Yes (1) | No (1)  

priya   11 years AGO

answer is 5. if p=5 then p%of p= p/20=>5/100*5=5/20.
so option 9 is correct.

Like? Yes (1) | No (1)  

Murali Krishna   11 years AGO

p% of p is P^2/100 and it is equal to p/20 hence p^2/100=p/20
-> p=5

Like? Yes (1) | No (1)  

muthulakshmi   11 years AGO

(5/100)*5=1/4

Like? Yes (1) | No (1)  

ARJYA HALDER   11 years AGO

P% of P=(P/100)*P=(P^2)/100
From question,
(P^2)/100=(P/20)
The above equation gives the result,
P=5
Therefore, option 9 is right.

Like? Yes (1) | No (1)  

b.s.venkatesh   11 years AGO

p/100*p=p/20
p=5

Like? Yes (1) | No (1)  

SONU GUPTA   11 years AGO

answer will be 5
P% of p =(p/20)
suppose p=5
5% of 5= (5/20)
(5/100)*5=(5/20)
(25/100)=(5/20)
(1/4)=(1/4)

Like? Yes (1) | No (1)  

lovkesh goyal   11 years AGO

P% of P =p/20
=> (p/100)*p=p/20
=>p=5

Like? Yes (1) | No (1)  

SauravTiwari   11 years AGO

p%ofp =(p*p)/100=p/20
solving the above we get p=5 ...

Like? Yes (1) | No (1)  

Ann Mary Jolly   11 years AGO

ANS: 9) 5
Given...... p*p/100 = p/20
p^2 = 5p
since p NOT= 0, p = 5

Like? Yes (1) | No (1)  

Rashmi bharti   11 years AGO

p=5,
5*5/100=5/20

Like? Yes (1) | No (1)  

VEENA GUPTA   11 years AGO

p/100*p=p/20
p*p=100p/20
p=5

Like? Yes (1) | No (1)  

Gundavarapu Parameswari   11 years AGO

(p/100)*p= p/20
p=5

Like? Yes (1) | No (1)  

Abhishek Mishra   11 years AGO

P*P/100 = P/20
which gives P = 5

Like? Yes (1) | No (1)  

vishwajeetsingh   11 years AGO

(p/100)=(p/20),p=5p

Like? Yes (1) | No (1)  

ompriya gupta   11 years AGO

p*p/100=p/20

Like? Yes (1) | No (1)  

sailaja v r namuduri   11 years AGO

p^2/100=p/20

Like? Yes (1) | No (1)  

Rahul Gupta   11 years AGO

p*p/100=p/20
=>p/100=1/20
=>p=100/20
p=5
ANS9)5

Like? Yes (1) | No (1)  

kanampalli himaja   11 years AGO

pp/100=p/20
p=100/20
=5

Like? Yes (1) | No (1)  

Bharat Bhushan Jha   11 years AGO

p*p/100=p/20
then p=5

Like? Yes (1) | No (1)  

Spandan   11 years AGO

P*P/100=P/20
Hence, P=5

Like? Yes (1) | No (1)  

DHIRENDRA    11 years AGO

given p%ofp=p/20

p*p/100=p/20
p/100=1/20
p/5=1/1
p=5answer

Like? Yes (1) | No (1)  

Chandni Maurya   11 years AGO

ans=(9).5
according to question,
(p/100)*p=p/20
=>p=100/20=5

Like? Yes (1) | No (1)  

mohini gupta   11 years AGO

p*p/100=p/20
p=5

Like? Yes (1) | No (1)  

debabrata sarkar   11 years AGO

p^2/100=p/20
therefore p=5

Like? Yes (1) | No (1)  

SURAJ ARYA   11 years AGO

(p*p)/100=p/20

p=5

Like? Yes (1) | No (1)  

himadri poddar   11 years AGO

(p/100)*p=p/20

Like? Yes (1) | No (1)  

Anish Kumar Shaw   11 years AGO

(p/100)*p=p/20 solving this we get p=5

Like? Yes (1) | No (1)  

Saddam Hossain   11 years AGO

(P/100)*P = P/20
then P = 5

Like? Yes (1) | No (1)  

raghuram dharmavarpu   11 years AGO

(p/100)p=p/20
p=100/20,p=5

Like? Yes (1) | No (1)  

RAKESH   11 years AGO

p*p/100=p/20
p^2/100=p/20
p/10=1/2
p=5

Like? Yes (1) | No (1)  

Devendra Marghade   11 years AGO

Given,P*P/100=P/20
P=100/20=5

Like? Yes (1) | No (2)  

18 Nov 2013 Sequence

What is the next number of the following sequence
1124,39416,525636,749864,......

OPtion

1) 98111121
2) 864981
3) 1112110100
4) 1010012144
5) 63610100
6) 91001081
7) 98110100
8) 981525416
9) 98120400
10)None of these

Solution

1124 = 1-1^2-2-2^2 = 1-1-2-4 = 1124
39416 = 3-3^2-4-4^2 = 3-9-4-16 = 39416
525636 = 5-5^2-6-6^2 = 5-25-6-36 = 525636
749864 = 7-7^2-8-8^2 = 7-49-8-64 = 749864
Similarly
98110100 = 9-9^2-10-10^2 = 9-81-10-100 = 98110100

option 7)

Correct Option: 7 Best Solution (27)

Raisul Alam   11 years AGO

If we notice the first digit of every number then we find a sequence like 1,3,5,7 so the first digit of the next number will be 9.
the second digit of the every number maintain a sequence like 1,9,25,49 ie (first digit)^2.
So the after 9 it will be 81.
Then it maintains the following sequence like 2,4,6,8....So after 81 it will be 10.
The last digit=4,16,36,64 ie square of the previous digit. And for the next number it will be (10)^2=100
So the next number is 98110100.

Like? Yes (5) | No   

RAKESH   11 years AGO

1124=1 1^2 2 2^2
39416=3 3^2 4 4^2
525636=5 5^2 6 6^2
749864=7 7^2 8 8^2
hence next number is
9 9^2 10 10^2 =98110100

Like? Yes (6) | No (2)  

Parthiban C   11 years AGO

squaring....
1,3,5,7,9...with 2,4,6,8,10...

Like? Yes (3) | No (1)  

Suman   11 years AGO

If we look at the series carefully then we find a sequence....like the first number 1124...Interpret it like 1 then its square 1,2 and its square 4...look at the second number 3 its square 4 its square i.e 39416...likewise the third number 5 its square 6 its square i.e 525637...next 749864....so the answer will be 98110100

Like? Yes (2) | No   

Bingumalla Abinay   11 years AGO

X^2 and (X+1)^2

981 10100

Like? Yes (2) | No (1)  

Rahul Gupta   11 years AGO

General Equation = (n(n*n))((n+1)(n+1)*(n+1))
Example: (1(1*1))((2)(2)*(2))=1124,
(3(3*3))(4(4)*(4))=39416,
(5(5*5))(6(6)*(6))=525636,
(7(7*7))(8(8)*(8))=748864,
(9(9*9))(10(10)*(10))=98110100.
Ans:7) 98110100

Like? Yes (2) | No (1)  

Chandni Maurya   11 years AGO

1124; 39416;525636; 749864
breaking each no in 4 parts(1st,2nd,3rd and 4th)
1,1,2,4; 3,9,4,16; 5,25,6,36; 7,49,8,64
now we can see a series,
=> [1,(1)^2,2,(2)^2]; [3,(3)^2,4,(4)^2]; [5,(5)^2,6,(6)^2]; [7,(7)^2,8,(8)^2]
similarly, next
[9,9^2,10,10^2] = 98110100

Like? Yes (1) | No   

Grishma Shah   11 years AGO

the no. formed is the square of the ascending no.
1^2,2^2= 11,24
3^2,4^2=39,416
5^2,6^2=525,636
7^2,8^2=749,864
Next no. will be 9^2,10^2=981,10100=98110100
The option 7) is answer

Like? Yes (2) | No (1)  

Aditya Chittekar   11 years AGO

First digits are consecutive odd nos
Next one /two digits are square of first no
Next one /two digits are consecutive even nos
Next one /two digits are square of previous no

Like? Yes (1) | No   

ravi   11 years AGO

1 st digit is regular alternate increment.further digits are square of previous one.next digit is one increment to first digit and further its square.

Like? Yes (1) | No   

Harjit kaur   11 years AGO

Rule is
1,1^2,2,2^2=1124
3,3^2,4,4^2=39416
5,5^2,6,6^2=525636
Thus so on ans is
9,,9^2,10,10^2=98110100

Like? Yes (1) | No   

hitesh kumar gupta   11 years AGO

first term is 1, 1*1 ,2, 2*2 = 1124

second term is 3 ,3*3, 4,4*4= 39416

third term is 5, 5*5, 6, 6*6= 525636

fourth yerm is 7, 7*7, 8, 8*8= 749864

IN SIMILAR WAY

fifth term is 9, 9*9 ,10 ,10*10 = 98110100

Like? Yes (1) | No   

Anantharaman   11 years AGO

all number are formed by =>the number and its square

1124
39416
525636
749864

Again following the same formula

98110100

Option 7

Like? Yes (1) | No   

Jitendra   11 years AGO

Series of the number is has a specific pattern to follow:

1st place - Adding 2 to the first digit
2nd place - squaring the added digit
3rd place - Adding 1 to the newly added first digit
4th Place - Add all the numbers calculated in 1st, 2nd & 3rd places.
1124 = (1+2)(1+2)^2(1+2+1)(3+9+4) = 39416
Similarly the next number after
749864 -> (7+2) (7+2)^2(7+2+1)(9+81+10) = 98110100

ans: option 7

Like? Yes (2) | No (1)  

Anilkumar   11 years AGO

1 1^ 2 2^
3 3^ 4 4^
5 5^ 6 6^
7 7^ 8 8^
9 9^ 10 10^

Like? Yes (2) | No (1)  

vishal barun   11 years AGO

n-1 (n-1)*(n-1) n n*n , where n=2,4,6,8,10 ,
for soln put n=10
98110100

Like? Yes (1) | No   

Abhishek Mishra   11 years AGO

The answer is 98110100 and solution is as follow:
1 1*1=1 2 2*2=4
3 3*3=9 4 4*4=16
5 5*5=25 6 6*6=36
7 7*7=49 8 8*8=64
9 9*9=81 10 10*10=100
so next no. is 98110100

Like? Yes (2) | No (1)  

vinit agarwal   11 years AGO

writing number and square of that number
1^2 =1
2^2=4
3^2=9
4^2=16
so go on after 8
9^2=81
10^2=100
so 98110100

Like? Yes (1) | No   

ROHIT RAJ   11 years AGO

1²1 2² 4 = 1124
3²9 4²16 = 39416
5²25 6²36 = 525636
7²49 8²64 = 749864
therefore
9²81 10²100 = 98110100

Like? Yes (2) | No (1)  

kumar sundram   11 years AGO

here sequence is 1(1^2)2(2^2) i.e. 1124;
3(3^2)4(4^2) i.e. 39416;
5(5^2)6(6^2) i.e. 525636;
7(7^2)8(8^2) i.e. 749864;
so the next no is
9(9^2)10(10^2) i.e. 98110100.

Like? Yes (2) | No (1)  

vikash kumar mahato   11 years AGO

since the unit digit is 1,3,5,7 is given so next is 9
and the last digit is 4,16,36,64 whic is obtain by 4*1,4*4,4*9,4*16 so next will be 4*25=100.
here the increment of multiplier is 3,5,7,9
so by adding 16+9=25.
4*25=100
so answere is 9........100

Like? Yes (1) | No   

Vinay Sipani    11 years AGO

1124 => 11 and 24 => 1^2=1 and 2^2=4
39416 => 39 and 416 => 3^2=9 and 4^2=16
=> next term = 9^2=81 and 10^2=100 => 98110100

=> opt. 7

Like? Yes (1) | No   

samresh kumar singh   11 years AGO

every 1st number increase by 2: 1,3,5,7,9
every 2-3rd number increase by square of 1st digit: 1,9,25,49,81
every 5-6 number increase by 2: 2,4,6,8,10
and last square of previous no : 4,16,36,64,100

Like? Yes (1) | No   

Udhaya kumar   11 years AGO

1 then 1^2 then 2 then 2^2=1124
simailarly final 9,9^2,10,10^2=98110100......

Like? Yes (1) | No   

susmit   11 years AGO

For the given numbers :
1) First digit is in A.P.(1, 3, 5, 7)
2) Next digit(s) are the squares of 1,3,5,7
3) Next digit is in A.P.(2, 4, 6, 8)
4) Next digit(s) are the squares of 2, 4, 6, 8
Hence, for the answer :
1) First digit is 7 + 2 = 9
2) Next two digits are (7+2)^2 = 9^2 = 81
3) Next two digits (8+2) = 10
4) Next three digits (8+2)^2 = 10^2 = 100.
Hence, the required number is 98110100.
Hence, option no. (7)

Like? Yes (1) | No (1)  

Mithun Kumar Kesari   11 years AGO

first no. is odd second is its suare, 3rd is even and 4th is its square. so final answere is 98110100

Like? Yes (1) | No (1)  

Bimal   11 years AGO

1124,39416,525636,749864,......
1124>>>>..1...1^2....2.....2^2
39416 >>> .. 3..3^2..4..4^2
..
..
9..9^2..10..10^2 ....98110100.. option 7

Like? Yes (1) | No (1)  

15 Nov 2013 Circle

Maximum and minimum number of intersecting points between 4 circles drawn in a plane are

OPtion

1) 16, 1
2) 18, 2
3) 10, 4
4) 12, 4
5) 20, 0
6) 10, 0
7) 22, 0
8) 12, 0
9) 16, 0
10)None of these

Solution

Every circle intersects other circle in maximum 2 points or minimum 0 point.
Total number of combinations of circle are 6 hence maximum points are 12.
Minimum intersecting points are 0.
12, 0
option 8)

Correct Option: 8 Best Solution (15)

shaswata tripathy   11 years AGO

with 2 circles, 2 points of intersections total = 2.
one more circle, 2 points of intersections,
one for each of the other 2 circles,total 3+3=6
one more circle, total 6+6= 12 points.
and minimum 0

Like? Yes (10) | No (4)  

abhi   11 years AGO

as two circle cut each other 2 cuts . third will cut 2 cut to each circle hence 4 now forth will cut it to 6 so total is 2+4+6=12
min will 0

Like? Yes (5) | No (2)  

Suman   11 years AGO

We know that in case of line segment if there are n lines in a plane the total number of intersection point is nC2.but in case of circle two circle meet in maximum two points.So n circle meet in nC2*2 points i.e 12 points......
And minimum number of intersection is always o that is well known to all....

Like? Yes (4) | No (2)  

raghuraj singh rajawat   11 years AGO

max 12 min 0

Like? Yes (2) | No   

Chandni Maurya   11 years AGO

ans=12,0
let n be the no of circles,
max no of intersecting points,
=(n-1)*2+[(n-1)*2-2]+[(n-1)*2-4]
here n=4
=>(4-1)*2+[(4-1)*2-2]+[(4-1)*2-4]
=6+4+2=12

Like? Yes (5) | No (4)  

sivaramakrishna   11 years AGO

max=4*3=12
min=0

Like? Yes (1) | No   

prakash kumar   11 years AGO

for minimum no. of intersecting points 4 circles draw in a plane with some distance intersecting point is 0.
2 circles intersect maximum points = 2
3 circles intersect maximum points = 3*2 = 6
4 circles intersect maximum points = 6*2 = 12.

Like? Yes (1) | No   

Shreesh Tripathi   11 years AGO

iu u draw 2 circle intersect at 2 point 3 at 6 point thus 4 at 12 points and minimally at 0

Like? Yes (1) | No   

himani sikarwar   11 years AGO

four circle can intersect to eachother,so maximum point of intersection is 12 and no circle can intersect in the same plain so minimum point of intersection is 0.

Like? Yes (1) | No   

R.RAVIKUMAR   11 years AGO

The mininum intersection points is 0
and max intersection points is 12
=> 2*3+2*2+2*1=12

Like? Yes (2) | No (3)  

Dr.Dipin Singh   11 years AGO

Any circle can cut other circle in max 2 points which are shared by both.
so 2 circles can intersect max at 2 (2*2*1/2)points.
3 circles can intersect max at 6 (3*2*2/2)points.
4 circles can intersect max at 12 ( 4*2*3/2) points.

Like? Yes (4) | No (5)  

Harjit kaur   11 years AGO

2nd circle intersect the 1st at 2 points
3rd ". ". ". " And 2nd at 4points
4th. ". ". ". ". ". ". And 3rd at 6 points
Thus total intersection points are2+4+6=12

Like? Yes (2) | No (3)  

Prakash kumar   11 years AGO

from picture interpretation max '12' min '0'
But what if 4 circles overlap (an intersect too)
then
max 'infinity' min '0'

Like? Yes (2) | No (3)  

gourav kumar   11 years AGO

2*3*2=12

Like? Yes (1) | No (3)  

Aditya Chittekar   11 years AGO

Each circle will intersect every circle in 2 points.
Total intersection points is 4*3= 12
Minimum will be 0

Like? Yes (1) | No (3)  

14 Nov 2013 Find the value

If x/y = 3/2
Then, (x^2+y^2+2xy)/(x^2+y^2-2xy) = ?

OPtion

1) 25/16
2) 15
3) 12
4) 9/4
5) 8
6) 25/9
7) 16
8) 25
9) 5/3
10)None of these

Solution

(x^2+y^2+2xy)/(x^2+y^2-2xy)
= (x+y)^2/(x�y)^2
= (3+2)^2 / (3-2)^2
= 5^2/1^2
= 25

Correct Option: 8 Best Solution (69)

FAISAL RIZWAN   11 years AGO

(x^2+y^2+2xy)/(x^2+y^2-2xy)
Can be written as
(x+y)^2/(x-y)^2.....(1)
Given x/y=3/2
then x=3y/2
put the value of x in equation 1
((3y/2)+y))^2/((3y/2)-y)^2
After solving we get 25
so option 8 is correct

Like? Yes (8) | No (1)  

Ashfaque Hussain   11 years AGO

x/y = 3/2
=>x=3y/2
Given expression to evaluate:
(x^2+y^2+2xy)/(x^2+y^2-2xy) = ((x+y)^2)/((x-y)^2)
=(3y/2+y)^2/(3y/2-y)^2 = ((5y/2)^2)/((y/2)^2)
=25

Like? Yes (6) | No (3)  

amit bhagat   11 years AGO

Since, it is been given that x/y = 3/2
therfore we have x=3y/2.
now putting this value of x in -
(x^2+y^2+2xy)/(x^2+y^2-2xy) = (x+y)^2/(x-y)^2)
= (3y/2+y)^2/(3y/2_y)^2
= (5y/2)^2/(y/2)^2
= (25y^2/4)/(y^2/4)
= 25

Like? Yes (3) | No   

Harsh Poddar   11 years AGO

x/y=3/2
x=(3/2)y
(x^2+y^2+2xy)/(x^2+y^2-2xy)
=(x+y)^2/(x-y)^2
=((3/2)y+y)^2/((3/2)y-y)^2
=(5y/2)^2/(y/2)^2
=(25y^2/4)/(y^2/4)
=25
option 8

Like? Yes (2) | No   

ChinnaChowdaiah   11 years AGO

x/y= 3/2
so,
x=3
y=2
put this values in the given expression so we get
(9+4+12)/(9+4-12) =25

Like? Yes (2) | No   

Akash Agrawal   11 years AGO

we rewrite the given equation as(x+y)^2/(x-y)^2
again((x/y+1)/(x/y-1))^2 put the x/y value ans=25.

Like? Yes (2) | No   

RAKESH   11 years AGO

(x^2+y^2+2xy)/(x^2+y^2-2xy) =(x+y)^2/(x-y)^2
=(x/y +1)^2/(x/y -1)^2
=(3/2 +1)^2/(3/2-1)^2
=25/4 *4 =25

Like? Yes (1) | No   

Mahesh   11 years AGO

Let x = 3k and y = 2k

The given expression can be written as (x + y)^ 2/(x-y)^2 = (5k)^2/(k)^2= 25 k^2/k^2= 25

Like? Yes (1) | No   

Raisul Alam   11 years AGO

Here (x/y)=(3/2)
so 2x=3y
and x=(3*y/2)
Now (x^2+y^2+2xy)/(x^2+y^2-2xy)
=(x+y)^2/(x-y)^2
puttting the value of 'x' in terms of 'y' we get
((3*y/2)+y)^2/((3*y/2)-y)^2
=(5*y/2)^2/(y/2)^2
=(25*y^2/4)/(y^2/4)
=25 . Hence option 8 is the right answer.

Like? Yes (2) | No (1)  

achyuth   11 years AGO

if x/y=3/2 so x=3 ,y=2
(x^2+y^2+2xy)/(x^2+y^2-2xy)
(3^2+2^2+2*3*2)/(3^2+2^2-2*3*2)
25/1
ans=25

Like? Yes (2) | No (1)  

Udhaya kumar   11 years AGO

from given x=3y/2
(x+y)^2/(x-y)^2=25/4*4=25..............

Like? Yes (2) | No (1)  

Dipika Singh   11 years AGO

we can write the eq. in simplifed form as =((x+y)^2)/((x-y)^2)
=(((x/y)+1)^2)/(((x/y)-1)^2)
=((3/2+1)^2)/((3/2-1)^2)
=25
answer is => option 8.

Like? Yes (1) | No   

Pooja P   11 years AGO

given that x/y=3/2
so,(x/y)+1=(x+y)/y=(3/2)+1=5/2..............(1)
again,(x/y)-1=(x-y)/y=(3/2)-1=1/2.............(2)
dividing eq(1)by eq(2)we get
(x+y)/(x-y)=(5/2)*2=5
so{(x+y)/(x-y)}^2=5^2=25
ans.(8)

Like? Yes (1) | No   

Rajasekhar Reddy   11 years AGO

(x+y)^2/(x-y)^2 = (x/y+1)^2/(x/y-1)^2
= (25/4)/(1/4) = 25

Like? Yes (2) | No (1)  

Prakash kumar   11 years AGO

(x+y)^2/(x-y)^2 = [(x/y) + 1]^2 / [(x/y) - 1]^2
= (5/2)^2/(1/2)^2
= 25 ans

Like? Yes (1) | No   

Devendra Marghade   11 years AGO

(x^2+y^2+2xy)/(x^2+y^2-2xy)=(x+y)^2/(x-y)^2
=(x+y)(x+y)/(x-y)(x-y)
=y[(x/y)+1]x[(1+(y/x)]/y[(x/y)-1]x[1-(y/x)]
Substituting values x/y=3/2 & y/x=2/3
[(3/2)+1][(1+(2/3)]/[(3/2)-1][(1-(2/3)]
=[(5/2)(5/3)]/[(1/2)(1/3)]
=25

Like? Yes (1) | No   

Suman   11 years AGO

Here given x/y=3/2
Let us assume x=3k and y=2k where k>0
According to the question (x^2+y^2+2xy)/(x^2+y^2-2xy)
=(x+y)^2/(x-y)^2 [formula]
=(3k+2k)^2/(3k-2k)^2
=(5k/k)^2
=25 (answer)
=

Like? Yes (1) | No   

b.s.venkatesh   11 years AGO

(x+y)^2/(x-y)^2
y=2x/3
sub we get 25

Like? Yes (1) | No   

Harjit kaur   11 years AGO

x/y = 3/2
Applying componendo nd dividendo
X+y/x-y=5/1
Then, (x^2+y^2+2xy)/(x^2+y^2-2xy) = ?
(X+y)^2/(x-y)^2=(5k)^2/(1k)^2
=25

Like? Yes (1) | No   

batsal   11 years AGO

(x+y)^2/(x-y)^2=((5/2)/(1/2))^2=25

Like? Yes (1) | No   

Rashmi bharti   11 years AGO

(x+y)^2/(x-y)^2
=>25.

Like? Yes (1) | No   

theodar   11 years AGO

above given numerator has formula of (a+b)^2 and denominator is (a-b)^2 and hence applying, the answer is (3+2)^2/(3-2)^2=25
ANS:8)25

Like? Yes (1) | No   

krishnapriya   11 years AGO

multiply the given equation with 1/y^2 in numerator and denominator
then put x/y=3/2
the result will be 25

Like? Yes (1) | No   

Lavankumar Reddy   11 years AGO

First x/y = 3/2 then x = 3y/2
Second
(x^2+y^2+2xy)/(x^2+y^2-2xy) = (x+y)^2/(x-y)^2
= (x+y/x-y)^2
Then Substitute x value
=(3y/2+y/3y/2-y)^2
=(3y+2y/3y-2y)^2
=(5y/y)^2
=(5)^2
=25

Like? Yes (1) | No   

harjeet   11 years AGO

x/y=3/4
x=3y/2
put in
simplified equation
(x+y)^2/(x-y)^2=(3y/2+2)/(3y-2)
ans is 25

Like? Yes (1) | No   

SONU GUPTA   11 years AGO

If x/y=3/2
then, (x^2+y^2+2xy)/(x^2+y^2-2xy)=(x+y)^2/(x-y)^2=(x/y+1)^2/(x/y-1)^2=(3/2+1)^2/(3/2-1)^2=(5/2)^2/(1/2)^2=(25/4)/(1/4)=25

Like? Yes (1) | No   

Chandni Maurya   11 years AGO

ans=25
dividing by y^2 in Denominator n N. v get,
[(x/y)^2+1+2(x/y)]/[(x/y)^2+1-2(x/y)]
=>put x/y=3/2
=>25/1=25

Like? Yes (1) | No   

suseela   11 years AGO

it is of the form [(x+y)^2]/[(x-y)^2].when y is taken as common in numerator and denominator we get {([x/y]+1)/[x/y]-1}^2.solving it by sunbstituing x/y =3/2,we get 25

Like? Yes (1) | No   

bejavada suresh   11 years AGO

use this formuale(x+y)^2/(x-y)^2

Like? Yes (1) | No   

MANISH KUMAR   11 years AGO

use componendo-dividendo method
(x^2+y^2+2xy)/(x^2+y^2-2xy)=(x+y)^2/(x-y)^2
={(x+y)/(x-y)}^2
now,
x/y=3/2
=x+y/x-y=3+2/3-2
=x+y/x-y=5
squaring both sides;
{(x+y)/(x-y)}^2=25.......answer

Like? Yes (1) | No   

laxman   11 years AGO

take y^2 commn on both numerator and denominatr.then y^2 cancelld,then substitute the value given in the sum.........
we get 25 as answr........gud luck

Like? Yes (1) | No   

sivaramakrishna   11 years AGO

x=3k,y=2k
x+y=5k
x-y=k
25k^2/k^2==>25

Like? Yes (1) | No   

KD   11 years AGO

(x^2+y^2+2xy)/(x^2+y^2-2xy) =((x+y)/(x-y))^2 ...eqn1
x/y = 3/2 => x=3y/2
Now putting the value of x in the eqn 1.

we get ((5/2)/(1/2))^2=25 is the answer.

Like? Yes (1) | No   

shaswata tripathy   11 years AGO

x/y=3/2
let x/3=y/2=k(constant) x=3k y =2k
(x^2+y^2+2xy)/(x^2+y^2-2xy)
=(x+y)^2 / (x-y)^2
=(3k+2k)^2 / (3k-2k)^2
=25k^2 / k^2=25

Like? Yes (1) | No   

Dr.Dipin Singh   11 years AGO

If x/y = 3/2
Then, x= 3/2 y
(x^2+y^2+2xy)/(x^2+y^2-2xy) = (x+y)^2/(x-y)^2 = ((3/2y+y)/(3/2y-y))^2 = 5^2=25

Like? Yes (1) | No   

Neelu khandelwal   11 years AGO

this equals to (x+y)^2/(x-y)^2
=((x/y+1)/(x/y-1))^2
=25

Like? Yes (1) | No   

prakash kumar   11 years AGO

x/y=3/2
using componendo and dividendo rule
x+y/x-y =x/y
therefore (x+y)/(x-y)=(3+2)/(3-2)=5
(x+y)^2/(x-y)^2 = 5^2 =25,

Like? Yes (1) | No   

SURAJ ARYA   11 years AGO

x/y=3/2
using componendo and dividendo rule
x+y/x-y =x/y
therefore (x+y)/(x-y)=(3+2)/(3-2)=5
(x+y)^2/(x-y)^2 = 5^2 =25,

Like? Yes (1) | No   

Logeshwaran Thangaraj   11 years AGO

value of x=3 & y=2. substitute it in the equation. you will get the answer as 25. also, the given expression is nothing but (x+y)^2/(x-y)^2. substitute the value of x & y to get the answer

Like? Yes (1) | No   

Himodyuti Bardhan   11 years AGO

x and y has the common divisor which can be eliminated and so we can safely assume that x=3 and y=2.
Rest is basic maths.

Like? Yes (1) | No   

haritha Boyapati   11 years AGO

=>((x+y)/(x-y))2
=>given x/y=3/2
=>x=3y
=> submit in the above equation we get answer as 25

Like? Yes (1) | No   

asha   11 years AGO

x^2+y^2+2xy = (x+y)^2
x^2+y^2-2xy = (x-y)^2

(x+y)^2/(x-y)^2=(3+2)^2/(3-2)^2
--> 5^2/1^2 --> 25/1 =25
ans is option 8) 25.

Like? Yes (1) | No   

Bharat Bhushan Jha   11 years AGO

x=3/2*y
(x+y/x-y)^2=25

Like? Yes (1) | No   

ashish agarwal   11 years AGO

divide whole with xy

Like? Yes (1) | No   

Britto prabhu   11 years AGO

x/y=3/2;
so,x=3y/2;
(x+y)^2/(x-y)^2=(3y/2+y)^2/(3y/2-y)^2
(25y^2/4)/(y^2/4)
Ans:25

Like? Yes (1) | No   

rajith lakshmanan   11 years AGO

(x/y+1)^2 / (x/y-1)^2

Like? Yes (1) | No   

sowmya   11 years AGO

x/y=3/2
i.e x=3/2y
so sub given eq then ans is 25

Like? Yes (1) | No   

kant kumar   11 years AGO

x=3y/2
put this value in (x+y)^2/(x-y)^2

Like? Yes (1) | No   

Jasmine Khan   11 years AGO

x/y=3/2
by componendo & devidendo
x+y/x-y=5/1
squaring both the sides
(x+y)^2/(x-y)^2=25/1

Like? Yes (2) | No (1)  

Aditya Chittekar   11 years AGO

Taking x^2 common we get,
[1+(y/x)^2+ 2*y/x]/ [1+(y/x)^2-2*y/x]
Substituting y/x=2/3,
[1+ 4/9+ 4/3]/ [1+ 4/9- 4/3],
=25

Like? Yes (1) | No   

jyoti kumari   11 years AGO

x=3/2y
put the value of x in terms of y in given question

Like? Yes (1) | No   

aruna   11 years AGO

13+12/13-12=25/1=25

Like? Yes (1) | No   

Rahul Gupta   11 years AGO

(x+y/x-y)2
=((x/y+1)/(x/y-1))2
=(3/2+1/3/2-1)2
=(3+2/3-1)2
=(5)2
=25

Like? Yes (2) | No (1)  

abhi   11 years AGO

(x+y)^2/(x-y)^2
taking y common
y^2(x/y+1)^2/y^2(x/y-1)
y^2 will cut
then
y/x=3/2
so answer is 25

Like? Yes (1) | No   

Ann Mary Jolly   11 years AGO

Ans 8) 25
x/y = 3/2 = 1.5
=> x =1.5y ....(1)
Then,(x^2+y^2+2xy)/(x^2+y^2-2xy)=((x+y)^2)/((x-y)^2)
Substituting (1) in the above expression,we get
ans = (2.5y)^2/(.5y)^2 = (2.5/.5)^2
= 25

Like? Yes (1) | No   

arijit sarkar   11 years AGO

(x^2+y^2+2xy)/(x^2+y^2-2xy)

=(x+y)^2/(x-y)^2
={(3y/2)+y)}^2/{(3y/2)-y)}^2 [x/y=3/2, so x=3y/2]
=(5y/2)^2/(y/2)^2
=25y^2/4 * 4/y^2
=25

Like? Yes (1) | No   

Kinjal Shah   11 years AGO

The equation is equivalent to (x+y)^2/(x-y)^2
Let x=3 and y=2
SUbstituting the values. Answer is 25

Like? Yes (1) | No   

NavyaNuchu   11 years AGO

(x+y)^2/(x-y)^2=divide num dino by y=>(x/y+1)^2/(x/y-1)^2=(5/2)^2/(1/2)^2=25

Like? Yes (1) | No   

vishnu   11 years AGO

ans is 25
let divide numerator and denominator by y^2 and substutite the x/y values

Like? Yes (1) | No   

Neha Sharma   11 years AGO

x^2+y^2+2xy)/(x^2+y^2-2xy)=(x+y)^2/(x-y)^2
=>y^2(x/y+1)/y^2(x/y-1)
here x/y=3/2
=>(3/2+1)^2/(3/2-1)^2
=>5^2=25

Like? Yes (1) | No   

sandy   11 years AGO

it can be written as (x+y)^2/(x-y)^2
substitute x=3/2*y
we will get ans as 25

Like? Yes (1) | No   

mehul   11 years AGO

put x=3y/2
y^2 will get cancel & hence we obtain 25

Like? Yes (1) | No   

Yatin Batra   11 years AGO

numerator is (x+y) square and denominator is (x-y
0 square....then make it whole square and apply componendo devidendo...we will get 25 as the ans.

Like? Yes (1) | No   

niranjanpulikonda   11 years AGO

apply componendo and dividendo
x/y=3/2
x+y/x-y=5
squaring on both sides

Like? Yes (1) | No   

susmit   11 years AGO

x/y = 3/2.
So by compodendo and dividendo.
(x+y)/(x-y) = (3+2)/(3-2) = 5
So, (x^2+y^2+2xy)/(x^2+y^2-2xy) = (5^2)/(1^2) = 25/1 = 25.
Hence, option no. (8)

Like? Yes (2) | No (2)  

R.RAVIKUMAR   11 years AGO

(x+y)^2/(x-y)^2
=> (x/y+1)^2/(x/y-1)^2
=> (3/2+1)^2/(3/2-1)^2 as x/y=3/2
=> 25

Like? Yes (2) | No (2)  

Suman Saurabh   11 years AGO

Given x/y=3/2
(x^2+y^2+2xy)/(x^2+y^2-2xy)=(x+y)^2 /(x-y)^2 =25

Like? Yes (1) | No (1)  

Sriparna Boote   11 years AGO

We know that
(x^2+y^2+2xy)=(x+y)^2
(x^2+y^2-2xy)= (x-y)^2
so the given equation is in the fform of
(x+y)^2/(x-y)^2
now dividing numerator and denominator by 1/y^2 we get

(x/y+1)^2/(x/y-1)^2
now putting x/y= 3/2 we get
the required answer as 25


hence 25 is the answer

Like? Yes (2) | No (2)  

PINKY   11 years AGO

x=3
y=2
(3+2)^2/(3-2)^2
25

Like? Yes (2) | No (2)  

13 Nov 2013 Cost Calculation

A man pays for 4 purchased items according to the conditions given below:
No. Items, Price Including Vat
1. T.V. - Rs.20000 (Vat%, 4)
2. Mobile - Rs.24000 (Vat%, 8)
3. Drugs - Rs.6000 (Vat%, 12)
4. Stationary - Rs.15000 (Vat%, 0)

Calculate the total marketed cost of all the articles purchased by man. (Answer in approx)

OPtion

1) 50000
2) 52560
3) 40323
4) 47623
5) 62000
6) 61810
7) 47170
8) 47694
9) 52480
10)48077

Solution

Marketed cost of first item is 20000*100/104 = 19230.76
Marketed cost of second item is 24000*100/108 = 22222.22
Marketed cost of third item is 6000*100/112 = 5357.14
Marketed cost of fourth item is 15000*100/100 = 15000

On adding these numbers, we get solution. Total = 61810.12
option 6) 61810

Correct Option: 6 Best Solution (22)

Rajasekhar Reddy   11 years AGO

104% = 20,000 100% = 20,000*(100/104) = 19,231
similarly for other things
for mobile = 24000*(100/108) = 22222
for drugs = 6000*(100/112) = 5357
for stationary = 15000
adding all these we get 61810

Like? Yes (5) | No (2)  

Dipika Singh   11 years AGO

as given in que. price including vat are given....
so to calculate marketed price we have to subtract the vat amt. with its origrnal price.
t.v=> 20,000-(4*20000/100)=19200
mobile=>24000-(8*24000/100)=22080
drgs=>6000-(12*6000/100)=5280
Stationary=>15000
net result=>19200+22080+5280+15000=61560
so approx. ans=> option 6

Like? Yes (2) | No (1)  

Suman   11 years AGO

From marketed cost concept marketed cost is excluding VAT

Marketed cost for T.V is (20000-20000*4%)=19200
Marketed cost for mobile is (24000-24000*8%)=22080
Marketed cost for drugs is(6000-6000*12%)=5280
Marketed cost for Stationary is(15000-0)=15000
So,total marketed cost is(19200+22080+5280+15000)
=61560
=61810(approx.)

Like? Yes (3) | No (2)  

Raisul Alam   11 years AGO

For T.V his expenditure was 20000/ where 4% VAT is included.
So The market price of T.V is (20000-20000*4%)
=19200/
For Mobile his expenditure was 24000 which 8% VAT is included.
So the market price of Mobile is (24000-24000*8%)
=22080/
Similiarly for Drugs--(6000-6000*12%)=5280
ANd No vat for Stationary there is no vat.
So the total Marketed cost is (19200+22080+5280+15000)=61560/-
So approx. 61810 hence option 6 is correct

Like? Yes (3) | No (2)  

Sriparna Boote   11 years AGO

Marketted price = Price excluding the vat.
So we have to substract the vat from the given above price...

After substracting,
TV = Rs 19200
Mobile = Rs 22080
Drugs = Rs 5280
Stationary = Rs 15000


Adding these prices we get Rs 61560.

Like? Yes (1) | No   

PINKY   11 years AGO

mp of tv=20000*100/104=19230.76
mp of mobile=24000*100/108=22222.22
mp of drugs=6000 *100/112= 5357.14
mp of stationary=15000
total= rs 61810

Like? Yes (1) | No   

GAYATHRI   11 years AGO

4% of 20000=800
20000-800=19200
8% of 24000=1920
24000-1920=12080

Like? Yes (1) | No   

Prakash kumar   11 years AGO

20000*(100/104) + 24000*(100/108) + 6000*(100/112) + 15000
= 61810 (approx)

Like? Yes (1) | No   

lovkesh goyal   11 years AGO

let item marked price in every case is x
for 1st item:
((4/100)*x)+x=20000
=> x=19230.77

for 2nd item:
((8/100)*x)+x=24000
=> x=22222.22

for 3rd item:
((12/100)*x)+x=6000
=> x=5357.14

for 4th item:
((0/100)*x)+x=15000
=> x=15000

total marked price=19230.77+22222.22+5357.14+15000
=61810.13

Like? Yes (2) | No (1)  

Neha Sharma   11 years AGO

Price after tax Divided by vat%/100+1 = Price before tax (Net price)
for tv
20000/1.04=19230.769
for mobile
24000/1.08=22222.222
for drugs
6000/1.12=5357.1429
for stationary
15000/1=15000
so the total marketed cost of all the articles purchased by man 19230.769+22222.222+5357.1429+15000=61810.134
ans is 61810

Like? Yes (1) | No   

ARJYA HALDER   11 years AGO

We know,
Marketed Cost=Printed Price(including VAT)-(VAT%)
So,
Marketed Cost of T.V=20000-(4% VAT)
=(20000*100)/(100+4)
=19230.769
Marketed Cost of Mobile=24000-(8% VAT)
=(24000*100)/(100+8)
=22222.222
Marketed Cost of Drugs=6000-(12% VAT)
=(6000*100)/(100+12)
=5357.142
Marketed Cost of Stationary=15000-(0% VAT)
=15000
Therefore,Total Marketed Cost=
(19230.76+22222.22+5357.14+15000.00)=61810.13
Hence option 6 is right.

Like? Yes (1) | No   

Aditya Chittekar   11 years AGO

Market price=Total price - VAT
TV MP=20000-0.04*20000=19200
Mobile MP=24000-0.08*24000=22080
Drugs MP=6000-0.12*6000=5280
STATIONARY MP=15000-0=15000
TOTAL=61810 Rs

Like? Yes (1) | No   

sanjay   11 years AGO

20000 vat@4%=19231
24000 vat@8% =22222
6000 vat @12% =5357
15000 vat 0%= 15000

Total :- 61810

Like? Yes (1) | No   

Devendra Marghade   11 years AGO

Total Marked price for TV+Mobile+drugs+Stationary
=(20000*100/104)+(24000*100/108)+(6000*100/112)+15000
=19230.769+22222.22+5357.142+15000=61810.134

Like? Yes (1) | No   

Vikas Mishra   11 years AGO

((100/104)*20000)+((100/108)*24000)+((100/112)*6000)+15000=61810

Like? Yes (1) | No   

Udhaya kumar   11 years AGO

(20000/1.04)+(24000/1.08)+(6000/1.12)+(15000/1.00)=61810.something..................

Like? Yes (2) | No (1)  

PANKAJ PANWAR   11 years AGO

total marketed cost =(20000/1.04)+(24000/1.08)+(6000/1.12)+(15000)
=61453

Like? Yes (1) | No   

Abhinav damalanka   11 years AGO

(20000/1.04)+(24000/1.08)+(6000/1.12)+15000=61810.
334

Like? Yes (1) | No   

vikash kumar   11 years AGO

20000/1.04+24000/1.08+6000/1.12+15000/1=61810

Like? Yes (1) | No   

b.s.venkatesh   11 years AGO

19200+22080+5280+15000 app=61810

Like? Yes (2) | No (2)  

susmit   11 years AGO

Payment includes VAT
So, total cost =
20,000 / 1.04 + 24,000 / 1.08 + 15000 + 6000 / 1.12
= 61810.13431 = 61810(Approx)
Hence, option no. (6)

Like? Yes (1) | No (1)  

Sai Eswar   11 years AGO

The exact answer is Rs.61560.

Like? Yes (1) | No (1)  

12 Nov 2013 Volume %

On increasing the side of a cube by 20 %, its volume increases by ?

OPtion

1) 75 %
2) 85.5 %
3) 72.8 %
4) 50 %
5) 100 %
6) 125.5 %
7) 150 %
8) 75.5 %
9) 90.25 %
10)200 %

Solution

Let the side of the cube is 1 meter
Then volume of that cube = 1*1*1 = 1 cubic meter
20% of 1 meter = 0.2 meter
Then side of cube = 1+.2 = 1.2
Hence new volume of the cube = 1.2*1.2*1.2 = 1.728 = 172.8 %
Increment in the volume = (172.8 � 100) % = 72.8 %

Correct Option: 3 Best Solution (58)

Akash Agrawal   11 years AGO

old volume of cube=a3
and new side of cube=a+0.2a=1.2a
new volume of cube=(1.2a)3=1.728a3
volume increase=(1.728-1)a3=0.728a3
so %increase vol=72.8

Like? Yes (14) | No (2)  

susmit   11 years AGO

Volume of the cube = (side)^3
Let the side be x
So volume will be x3
Now the side becomes 1.2x so the volume will be (1.2x)^3 = 1.728x^3.
Therefore increase in volume is (1.728x^3/x^3)
1.728x^3 - x^3 = 0.728x^3
Therefore percentage increase in volume is (.728x^3/x^3)*100 - 72.8%
Hence option no. (3)

Like? Yes (8) | No (1)  

Rajasekhar Reddy   11 years AGO

Let the side of cube is 10
volume = 1000
on increasing 20% side of cube is 12 and volume is 1728
1728-1000 = 728
(728/1000)*100 = 72.8

Like? Yes (8) | No (3)  

R.RAVIKUMAR   11 years AGO

let side of volume be "a"..
the side of volume is increased by 20%=> side becomes (1.2*a)
the volume increases by ((1.2*a)^3)-a^3
=> ((1.2^3)-1)=1.728-1=0.728
The volume incresed by 0.728*100=72.8%

Like? Yes (5) | No (1)  

nitesh singh   11 years AGO

Volume =a*a*a
So as side increase 20%
Increasing three times
100~120~144~172.8
So 72.8% increase

Like? Yes (5) | No (1)  

Muhammad Nadeem Haider Naseem   11 years AGO

Suppose the sides of a cube are each increased by 20%.
What is the percentage increase in the surfaace area of the solid?
Area is a function of the square of the sides.
1.2*s = 1.2^2*area
= 1.44*area
= 44% increase
What is the percentage increase in the volume of the solid?
Volume is a function of the cube of the sides.
1.2*s = 1.2^3*V
= 1.728V
= 72.8% increase

Like? Yes (5) | No (2)  

Grishma Shah   11 years AGO

suppose side of a cube is x
by increasing its side by 20% new side will be 1.2 x
Volume of a cube is V that is proportion to side^3
so volume of a new cube will be 1.728 x^3
so increase in new volume is (new volume - old volume)*100/old volume
thus (1.728 x ^3 -x^3)*100 /x^3
so answer is 72.8 %

Like? Yes (5) | No (2)  

Pooja P   11 years AGO

let side of cube be x
then its volume=x^3
side length increases by 20%
then new side=x+(20/100x)=6/5x
then new volume=(216/125)x^3
increase in volume=((216/125)-1)x^3=72.8%

Like? Yes (5) | No (2)  

RAKESH   11 years AGO

let x be side of cube, volume=x^3
after 20% increase side is=x+x*20/100=6x/5
new volume=(216/125)*x^3
increase in volume=(216/125)*x^3-x^3=(91/125)*x^3
% increase in volume=(91/125)*x^3/x^3 *100 =72.8%

Like? Yes (3) | No (1)  

jagdish sharma   11 years AGO

let we assume the side of cube=x
Then volume of cube =x^3
increasing the side by 20%
then length =1.2x
Volume=(1.2x)^3=1.728x^3
increased volume=(1.728-1)x^3=.728=72.8%

Like? Yes (3) | No (1)  

ChinnaChowdaiah   11 years AGO

Lets take side of the cube= a
then volume = a^3
on increasing the side of cube 20% the side become= a+0.2a
then volume= (a+0.2a)^3
Increase in volume =
((a+0.2a)^3 -(a^3)) / (a^3) * 100 = 72.8%
so answer is 72.8%

Like? Yes (3) | No (1)  

Jyothi   11 years AGO

a=10
b=12
Vola=1000
volb=1728
%=728/100=72.8

Like? Yes (3) | No (1)  

A J V   11 years AGO

Let the Old side = a.
So, Old volume = a * a * a = a^3

Now, New side = (a + 20% of a) = a + 0.2a = 1.2a
Then, New volume = (1.2a)(1.2a)(1.2a) = (1.2 * 1.2 * 1.2)a^3 = 1.728a^3

Volume increase = (1.728 - 1)a^3 = 0.728a^3

Percentage increase in volume = (increase / old volume) x 100% = (0.728/1)*100% = 72.8%

Like? Yes (2) | No (1)  

Dipika Singh   11 years AGO

let us cnsider side of cube =x
so,volume=x^3
on increasing side by 20% will give side=(6*x)/5
new volume=1.728*(x^3)
volume increases by=1.728*(x^3)-(x^3)=0.728*(x^3)
in percentage=72.8%
ans:option 3

Like? Yes (3) | No (2)  

b.s.venkatesh   11 years AGO

a*a*a=let a=100=100*100*100=1000000
120*120*120=1728000
diff=728000/1000000
=72.8%

Like? Yes (2) | No (1)  

Rajan   11 years AGO

in case of square cube all the sides will be same so the 20% increase makes the volume as v=120/100*120/100*120/100(l*b*h)
v=1728/1000(l*b*h)
v=1.728(l*b*h)
making it a significance increase of 72.8 %

Like? Yes (1) | No   

Amit kumar   11 years AGO

let the initial volume of Cube Be 100.
when side in increased by 20%.
Final volume= 100*(120/100)*(120/100)*(120/100)
== 172.8
Volume Increased = (172.8-100)/100= 72.8%

Like? Yes (2) | No (1)  

Rashmi bharti   11 years AGO

Old Side = x(let)
New Volume = 1.2*1.2*1.2x=1.728x
Gain =0.728x;
So 72.8%

Like? Yes (2) | No (1)  

priya   11 years AGO

answer = optin 3.
if the side of a cube =1 and its v=1. if its increased by 20% the side should be 6/5 and now the volume is 216/125. the difference is 0.728. if i coverted in to % the answer will be 72.8%

Like? Yes (2) | No (1)  

amit bhagat   11 years AGO

let the side of cube be 1 . then volume of cube = 1^3=1.

now, let the increased side be 1.2 then increased vol = 1.2^3 = 1.728.

therfore increase in vol. = 1.728 - 1.0 =0.728 =72.8 %

Like? Yes (2) | No (1)  

AMIT JAISWAL   11 years AGO

let the side of cube be 1 . then volume of cube = 1^3=1.

now, let the increased side be 1.2 then increased vol = 1.2^3 = 1.728.

therfore increase in vol. = 1.728 - 1.0 =0.728 =72.8 %

Like? Yes (2) | No (1)  

rajith lakshmanan   11 years AGO

let cube side be 'a', when increase in side it become 1.2a, volume of cube is (side)^3

increase in volume= ((1.2a)^3-a^3)/a^3=0.728
% increase =72.8%

Like? Yes (1) | No   

UMAPATHI   11 years AGO

consider side of cube as 100 then it's volume is =100^3
1000000.
now side is increased by 20% we get new side as 120
(we can calculate side by ( 100+(20/100)*100 )
now new volume is 120^3=1728000
increase in volume is new volume-old volume
=1728000-1000000
=728000
then percentage increase in volume is
=(728000/1000000)*100
=72.8%

Like? Yes (2) | No (1)  

sivaramakrishna   11 years AGO

((6/5*6/5*6/5)-1)*100=91/125*100==>72.8%

Like? Yes (1) | No   

VIKASH RAY   11 years AGO

let he initial volume of the cube(v1)=x^3
where x is the side of the cube.
since yhe side of the cube increases by 20%
so the new volume of the cube (v2)=(120x/100)^3
again, by formula we know that,
%change in volume=[{(final volume)-(initial volume)}/(initial volume)]*100
so,by calculation we get the result....

Like? Yes (1) | No   

Suman   11 years AGO

Let us assume each side is x unit
so, volume is x^3 unit^3
Now increasing each side by 20% each side become (x+0.2x) unit or 1.2x unit.
So,now volume of the cube is (1.2x)^3 unit^3 or 1.728 unit^3.
So. volume increased by ((1.728-1)*x^3/x^3)*100% or 72.8%
Thank u....

Like? Yes (1) | No   

Diksha   11 years AGO

let side be 100 & v1 = 100^3
after increment side will be 100 +20% of 100 = 120
and v2 = 120^3

now,

( 120^3 - 100^3)/ 100^3 * 100 = 72.8%

Like? Yes (1) | No   

Sandeep Negi   11 years AGO

(1.2^3-1^3)/1^3*100=72.8

Like? Yes (1) | No   

sachin shukla   11 years AGO

let side of cube be a and its volume become a^3
nw side bcm 1.2a so...1.2*1.2*1.2=1.728
so volume bcm 1.728a^3
or a^3 + .728a^3
so inc in volume is .728a^3
which is 72.8% of original volume.

Like? Yes (1) | No   

Devendra Marghade   11 years AGO

If side of cube=x, volume=x^3
on 20% increase in side, it becomes x+x*20/100=1.2x
New volume=1.2x*1.2x*1.2x=1.728x^3
So % increase in volume=100*1.728x^3/x^3=72.8

Like? Yes (1) | No (1)  

Suman Saurabh   11 years AGO

Let original side of cube=1 unit
After increasing side by 20% length of side=1.2 unit
Increase in volume=(1.728-1)/1 * 100 =72.8%

Like? Yes (1) | No (1)  

FAISAL RIZWAN   11 years AGO

Area of a cube is a^3
But it is increased by 20% ie (100+20)/100=1.2%
So a^3=(1.2)^3=1.728
Now the Volume increased by is 1.728/100=72.8%
So option 3 is correct

Like? Yes (2) | No (2)  

SHIVANI PRAKASH   11 years AGO

volume=s^3
now,new s=1.2s
new vol=(1.2s)^3
thus increase=(1.2s)^3-s^3
=72.8%

Like? Yes (1) | No (1)  

arijit sarkar   11 years AGO

if side of the cube is x then volume x^3

if side increase by 20% then side will be (125*x)/100= (6x/5)

so new volume (6x/5)^3=216x^3/125

increase (216x^3/125)-x^3=(91x^3/125)

so percentage=(91x^3/125) *100= 72.8%

Like? Yes (1) | No (1)  

SHAIK SADDAM HUSSAIN   11 years AGO

Old side = m.
Old volume = m*m*m =m^3
New side =(m+20%ofm)=m+0.2m=1.2m
New volume =(1.2m)(1.2m)(1.2m) =
(1.2*1.2*1.2)m^3 = 1.728m^3
Volume increase = (1.728-1)m^3 =0.728m^3
Percentage increase in volume = (increase / old volume)x100% =(0.728/1)*100% =72.8%

Like? Yes (1) | No (1)  

abhi   11 years AGO

cube volume is a^3
let a=10
vol=10*10*10=1000
increase by 20% then a=12
vol=12*12*12=1728
increase=1728-1000=728
%increase=(728*100)/1000=72.8

Like? Yes (1) | No (1)  

Prakash kumar   11 years AGO

x change to (6/5)*x
thr4
vol : x^3 change to (216/125)*x^3
% incrse in vol =[{(216/125) - 1}/1]*100
= 72.8 %

Like? Yes (1) | No (1)  

ArunKumar   11 years AGO

Old side = x.
Old volume = x^3

New side = (x + 20% of x = x + 0.2x = 1.2\x
New volume = = (1.2 * 1.2 * 1.2)x^3 = 1.728x^3

Volume increase = (1.728 - 1)m^3 = 0.728m^3

Percentage increase in volume = (increase / old volume) x 100% = (0.728/1)*100% = 72.8%

Like? Yes (1) | No (1)  

Harjit kaur   11 years AGO

Side of cube=x
Vol of cube=x^3
Vn side increased by 20%
Side of cube=x+x/5=6x/5
Vol=6x/5^3
Vol increased by{(6x/5)^3-x^3}*100%=72.8%

Like? Yes (1) | No (1)  

Jigyasa Kumar   11 years AGO

s+0.2s = 1.2s
volume = (1.2s)^3
v = 1.728
v = 172.8%
increase in vol = (172.8 -100)% = 72.8%

Like? Yes (1) | No (1)  

GAYATHRI   11 years AGO

let the side of the cube be 10
volume=1000
if the side increases by 20% then a=12
volume=1728
728 is 72.8 percentage of 1000

Like? Yes (1) | No (1)  

PRAMIT SINHA   11 years AGO

ans-3)72.8%

Like? Yes (1) | No (1)  

KD   11 years AGO

Let side of the cube is a .
So, On increasing the side of a cube by 20 % a(side) becomes (a*120)/100
Now we know that volume of a cube is=side^3
=a*a*a=a^3
Now Increased volume is =(a*a*a*120*120*120)/(100*100*100)
=172.8/100
So volume increases by 72.8% (Ans)

Like? Yes (1) | No (1)  

Lavankumar Reddy   11 years AGO

Side s then Volume v=s^3
Suppose s=100 then Volume v=100^3=1000000
Then s increased 20% then s=120 after V=120^3
=1728000
Then 1728000-1000000=728000
Then Volume increased percentage is = 728000/1000000= 72.8%

Like? Yes (1) | No (1)  

Jasmine Khan   11 years AGO

as we know that
volume of cube=l*w*h
that volume increase three times by 20%
therefore net % change after two times of increment
(x+y+xy/100)
40+4=44
consider w=44
net % change after three times of increment
(w+z+wz/100)
(44+20+880/100)
64+8.8=72.8

Like? Yes (1) | No (1)  

Saurabh Keshri   11 years AGO

let side=x
after increment
side=6x/5
vol=216x^3/125
increment in vol=91x^3
increase%=(91/125)*100
=72.8

Like? Yes (1) | No (1)  

mrityunjay kumar ray    11 years AGO

1.2*S=1.2^3*V
=1.728v
=72.8%

Like? Yes (1) | No (1)  

DHIRENDRA    11 years AGO

let side of cube is 100
then volume of cube=(100)^3=1000000
side incresed by 20%
then new side will be 120
volume=(120)^3=1728000
% of increment in volume=(1728000-1000000)*100/1000000=72.8% answer

Like? Yes (1) | No (1)  

Parveen Soni   11 years AGO

let side be a then volume=a^3 .........(1)
now on side increment new side=6/5(a)
new volume=216/125(a^3) .........(2)
% volume increment= [ (2)-(1) ]*100=72.8%

Like? Yes (2) | No (2)  

mirtunjay verma   11 years AGO

let size of a cube is 5 and increase 20% will 6
so we take the volume for 5 and 6 respectively so it would be =125,216 so increase % will 72.8%

Like? Yes (1) | No (1)  

Udhaya kumar   11 years AGO

v=a^3
a is increased by 20% that means a=1.2a
(1.2a)^3=1.728v
1.728-1=0.728= 72.8%........

Like? Yes (1) | No (1)  

ARJYA HALDER   11 years AGO

LET the size of the side of the cube is 100.
then, the volume=(100)^3=1000000
After incresing 20%,
side becomes 120.
volume becomes=(120)^3=1728000.
increase is=(1728000-1000000)*(100/1000000)=72.8%

Like? Yes (1) | No (1)  

sahil chugh   11 years AGO

succesive increment

Like? Yes (1) | No (1)  

maddali sudheer   11 years AGO

let,a=10
vol of cube=a^3
then vol=1000
if we inc 20% then 1728
inc % is=(728/1000)100=72.8%

Like? Yes (1) | No (1)  

Neha Sharma   11 years AGO

Longer, but to give more explanation perhaps:

Old side = m.
Old volume = m * m * m = m^3

New side = (m + 20% of m) = m + 0.2m = 1.2m
New volume = (1.2m)(1.2m)(1.2m) = (1.2 * 1.2 * 1.2)m^3 = 1.728m^3

Volume increase = (1.728 - 1)m^3 = 0.728m^3

Percentage increase in volume = (increase / old volume) x 100% = (0.728/1)*100% = 72.8%

Like? Yes (1) | No (1)  

Abhinav damalanka   11 years AGO

1.2*1.2*1.2=1.728
0.728*100/1=72.8%

Like? Yes (1) | No (1)  

GIRISH.H.P   11 years AGO

done easily by assuming some values..
volume of cube =side^3
first let s=10-->vol=1000;
now 20%increase in each side-->s=12-->vol=1728;
% inc in vol={(1728-1000)/1000}*100
=72.8%

Like? Yes (1) | No (1)  

Quaisar Rizwan   11 years AGO

Here,Area of a cube is a^3
But it is increased by 20% i.e (100+20)/100=1.2%
So a^3=(1.2)^3=1.728
Now the Volume increased by is 1.728/100=72.8%
So option 3 is correct

Like? Yes (1) | No (2)  

11 Nov 2013 Sequence

What is the next number of the following sequence
24,30,33,39,51......

OPtion

1) 54
2) 57
3) 58
4) 59
5) 60
6) 61
7) 62
8) 63
9) 72
10)None of these

Solution

24 (6 is sum of digit)
24+(2+4)= 24+6 = 30
30+(3+0)= 30+3 = 33
33+(3+3)= 33+6 = 39
39+(3+9)= 39+12= 51
Similarly Next
51+(5+1)= 51+6 = 57
option 6

Correct Option: 2 Best Solution (65)

FAISAL RIZWAN   11 years AGO

2+4=6 then add it to 24=30
3+0=3 then add it to 30=33
3+3=6 then add it to 33=39
3+9=12 then add it to 39=51
5+1=6 then add it to 51=57
57 is the correct answer
So option 2 is corect

Like? Yes (13) | No (1)  

Ashfaque Hussain   11 years AGO

24,30,33,39,51....
24, 2+4 = 6, next term = 24+6 = 30
30, 3+0 = 3, next term = 30+3 = 33
33, 3+3 = 6, next term = 33+6 = 39
39, 3+9 = 12, next term = 39+12 = 51
51, 5+1 = 6, next term = 51+6 = 57
Final answer = 57

Like? Yes (8) | No (1)  

Quaisar Rizwan   11 years AGO

So the Answer is as Follows
3+3=6 adding it to 33=39
3+9=12 then add it to 39=51
5+1=6 then add it to 51=57
57 is the correct answer
So option 2 is correct

Like? Yes (6) | No (1)  

ChinnaChowdaiah   11 years AGO

24
2+4=6
24 + 6= 30
30
3+0=3
30+3=33
33
3+3=6
33+6=39
39
3+9=12
39+12=51
51
5+1=6
51+6=57
so the answer is 57.

Like? Yes (5) | No (2)  

ArunKumar   11 years AGO

24 + 9 = 33
33 + 18 = 51
Likewise
30 + 9 =39
39 + 18 = 57

Like? Yes (4) | No (1)  

SHAIK SADDAM HUSSAIN   11 years AGO

24,..,33,..51
30,..,39,..
24+9=33,
33+18=51,...

30+9=39,
39+18=57,...
so next number is 57....

Like? Yes (3) | No (1)  

R.RAVIKUMAR   11 years AGO

It's can divide into two sequences by alternative positions... 24,33,51 and 30,39,?
the difference between 1st and 2nd number is 9 in each sequence..
i.e. 33-24=9 and 39-30=9
the difference between 2nd and 3rd number is 18 in each sequence..
i.e 51-33=18=> 39+18=57..

Like? Yes (2) | No   

FRANKLIN VIJAY   11 years AGO

24=24+2+4=30
30=30+3=33
33=33+6=39
39=39+12=51
51=51+6=57
Answer 57

Like? Yes (3) | No (1)  

yougeshwary   11 years AGO

0+24=24
24+6=30
30+3=33
33+6=39
51-39=22
means 2 diffrnc each tim
51+6=57
57+3=60
60+6=66
again diffrnc of 2 with 20
means 66+20=86
86+6=92
92+3=95
95+6=101

Like? Yes (2) | No   

achyuth   11 years AGO

24,30,33,39,51... in this sequence the difference between the two numbers is equal to the sum of the number ..
2+4=6 ... the difference between the 24,30 is 6 so...
5+1=6....the next number is 51+6=57..

Like? Yes (1) | No   

mrityunjay kumar ray    11 years AGO

2+4=6,24+6=30,3+0=3,30+3=33,3+3=6,33+6=39,3+9=12,39+12=51,5+1=6,51+6=57

Like? Yes (1) | No   

Parveen Soni   11 years AGO

24(2+4=6)-->24+6=30
30(3+0=3)-->30+3=33
33(3+3=6)-->33+6=39
39(3+9=12)-->39+12=51
Hence,
51(5+1=6)-->51+6=57

Like? Yes (2) | No (1)  

sivakumar   11 years AGO

difference series : 6,3,6,12,6,

Like? Yes (1) | No   

Balakumaran N.A   11 years AGO

here is pattern 2+4 6 add
3+0 3 add
3+3 6 add
3+9 12 add
5+1 6 add
so answer is 57

Like? Yes (2) | No (1)  

mausam   11 years AGO

24,30,33,39,51,57
30-24=6(adding 2+4=6,1st term i.e.24)
33-30=3(adding 3+0=3,2nd term i.e.30)
39-33=6(adding 3+3=6,3rd term i.e.33)
51-39=12(adding 3+9=12,4th term i.e.39)
57-51=6(adding 5+1=6,5th term i.e.51)

Like? Yes (1) | No   

Harjit kaur   11 years AGO

First no is 24
2+4=6
So add 6 to 24
We get 30
Thus 33=30+3+0
39=33+3+3
51=39+3+9
So nxt no is 51+5+1=57

Like? Yes (1) | No   

Praveen   11 years AGO

consider alternate numbers
24,33 and 51==>set 1
30,39 and __==> set 2

24+9=33 and 33+2*9=51 in set 1 and similarly
30+9=39 and 39+2*9=57 in set 2 which is the next number

Like? Yes (1) | No   

naval gupta    11 years AGO

for recruitment purpose

Like? Yes (1) | No   

sunny    11 years AGO

sum the digits to get the next no

Like? Yes (1) | No   

arijit sarkar   11 years AGO

30-24=6
33-30=3
39-33=6
so middle one is the half difference from the other two

so

51-39=12
57-51=6

so 57 ans

Like? Yes (1) | No (1)  

Jigyasa Kumar   11 years AGO

3*8=24
3*10=30
3*11=33
3*13=39
3*17=51
so 3*19=57
the next no. should also be multiple of a prime no.
The answer is 57

Like? Yes (2) | No (2)  

ramneet kaur   11 years AGO

57..
24 +6 =30
30 + 3 =33
and in next series it is
33 +6 =39
and 39 + 12= 51
so now again next no vl be +6
so 51+6 =57

Like? Yes (1) | No (1)  

Mahesh   11 years AGO

24 +2+4=30
30+3+0=33
33+3+3=39
39+3+9=51
51+5+1=57

Like? Yes (1) | No (1)  

Ankur Gupta   11 years AGO

sum of numbers have a pattern
24=2+4=6
30=3+0=3
33=3+3=6
39=3+9=12=1+2=3
51=5+1=6
next no. have sum=3

Like? Yes (1) | No (1)  

Grishma Shah   11 years AGO

24
30 = 24 + (2+4)
33 = 30 + (3+0)
39 = 33 + (3+3)
51 = 39 + (5+1)
next no. = 51 + (5+1) = 57
The option 2 is answer

Like? Yes (1) | No (1)  

Lavankumar Reddy   11 years AGO

3*8=24, 3*10=30, 3*11=33, 3*13=39, 3*17=51, then 3*19=57

Like? Yes (2) | No (2)  

Sriparna Boote   11 years AGO

the diff b/w every alternate consecutive terms is a multiple of 9
33-24=9
39-30=9
51-33=18
x-39=18
or, x=57....
hence 57 is the answer

Like? Yes (1) | No (1)  

Jasmine Khan   11 years AGO

let the number be x
30-24=6 which is double of 3 and 3=33-30
39-33=6 which is half of 12 and 12=51-39
x-51=6 which is double of 3
x=51+6=57

Like? Yes (2) | No (2)  

anusha chowdary   11 years AGO

the difference between terms follow the sequence 6,x,6,y,6...

Like? Yes (1) | No (1)  

Atti Devi   11 years AGO

24+6 30
30+3 33
33+6 39
39+12 51
51+6 57 (6/3=2 6*2=12 12/2=6 so answer is 57

Like? Yes (1) | No (1)  

Bharat Bhushan Jha   11 years AGO

2 st no- 1 nd no=9
5 th no-3 rd no=18
ao next no=39+18=57
2 ana....

Like? Yes (1) | No (1)  

sanjay   11 years AGO

24,30,33,39,42,48,51,57

Like? Yes (1) | No (1)  

Rahul Gupta   11 years AGO

24, 30, 33, 39, 51, 57
6, 3, 6, 12, 6

Like? Yes (1) | No (1)  

Devendra Marghade   11 years AGO

Number+sum of its digits=Next number
24+(2+4)=30
30+(3+0)=33
33+(3+3)=39
39+(3+9)=51
51+(5+1)=57

Like? Yes (1) | No (1)  

HARI om kashyap   11 years AGO

there are 2 series
24 33 51
30 39
first gap is 9 then it gets doubled
like this only next number will be 39+18=57

Like? Yes (1) | No (1)  

PINKY   11 years AGO

24+(2+4)=30
30+(3+0)=33
33+(3+3)=39
39+(3+9)=51
51+(5+1)=57

Like? Yes (1) | No (1)  

ALOK KUMAR NAYAK   11 years AGO

I think there is two sequence a={24,33,51,...} and b={30,39,...}

a = {24,24+9,33+18,51+27,78+36,...}
= 24+9⋅{0,1,3,6,10,...}
so, a= {24,33,51,78,114,...}

b = {30,30+9,39+18,57+27,...}
= 30+9⋅{0,1,3,6,...}
so, b= {30,39,57,84,120,...}

putting a & b sequence together we get--

c= {24,30,33,39,51,57...}

so, answer is 57

Like? Yes (1) | No (1)  

jagdish sharma   11 years AGO

30-24=6
33-30=3
39-33=6
51-39=12
so next no. is 51+6=57

Like? Yes (1) | No (1)  

Yapadinne Raju   11 years AGO

30-24=06.....>2+4=06
33-30=03.....>3+0=03
39-33=06.....>3+3=06
51-39=12.....>3+9=12
?-51=06......>5+1=06
so, if 06 added to 51 we get 57

Like? Yes (1) | No (1)  

KD   11 years AGO

here is pattern 2+4 6 add
3+0 3 add
3+3 6 add
3+9 12 add
5+1 6 add
so answer is 57

Like? Yes (1) | No (1)  

Arijit Roy   11 years AGO

24+(2+4)=30
30+(3+0)=33
33+(3+3)=39
39+(3+9)=51
51+(5+1)=57

Like? Yes (1) | No (1)  

Dipak Shaw   11 years AGO

next no. will be find out by addition of previous no. and its digit

so that
24,24+2+4,30+3+0,33+3+3,39+3+9,51+5+1,57

Like? Yes (1) | No (1)  

Sushil Singh   11 years AGO

24+6=30
30+3=33
33+6=39
39+(6*2)=51
51+(3*2)=57

Like? Yes (1) | No (1)  

Aditi Saxena   11 years AGO

There are two series going on in parallel.
1st series:-

24,33, 51 (here it is a, a+9, a+18)

2nd series:-

30,39,? (so here it is b, b+9, b+18)
i.e = 57

Like? Yes (1) | No (1)  

gurneet singh   11 years AGO

there is a difference of 9,9,18,18 in alternate digits

Like? Yes (1) | No (1)  

Prakash kumar   11 years AGO

2+4=6 so 24 + 6 =30
3+0=3 so 30 + 3 =33
3+3=6 so 33 + 6 =39
3+9=12 so 39 + 12 =51
5+1=6 so 51 + 6 = 57 ans

Like? Yes (1) | No (1)  

Jagannath Sahu   11 years AGO

24 ....1st step
then 2+4=6
24+6=30...2nd step
then 3+0=3
30+3=33...3 rd step
similarly


51
5+1=6
51+6=57 last step.

So answer is 2)57

Like? Yes (1) | No (1)  

abhi   11 years AGO

answer is 57
as
every no. 3 multiple hence
8*3,10*3,11*3,13*3,17*3,
now
8,10,11,13,17
then
two series are 8,11,17 different is 3 then 6
similarly
10,13 difference is 3 then next different is 6
so 13+6=19
19*3=57

Like? Yes (1) | No (1)  

ASHISH KUMAR MISHRA   11 years AGO

24 :=>2+4=6 , 24+6=30;
30 :=>3+0=3, 30+3=33;
33 :=>3+3=6, 33+6=39;
39 :=>3+9=12 , 39+12=51;
51 :=>5+1=6 , 51+6=57;

Like? Yes (1) | No (1)  

Aditya Kumar Sinha   11 years AGO

this question has two cycles
first 24,33,51
33-24=9
51-33=18
similarly
39-30=9
57-39=18
hence the no in the series is 57

Like? Yes (1) | No (1)  

SHIVANI PRAKASH   11 years AGO

24+(2+4)=30
30+(3+0)=33
33+(3+3)=39
39+(3+9)=51
51+(5+1)=57

Like? Yes (1) | No (1)  

SANDEEP   11 years AGO

here is pattern 2+4 6 add
3+0 3 add
3+3 6 add
3+9 12 add
5+1 6 add
so answer is 57

Like? Yes (1) | No (1)  

Udhaya kumar   11 years AGO

addition of previous number and individual digits..
24+2+4=30
30+3+0=33
33+3+3=39
39+3+9=51
51+5+1=57.............

Like? Yes (1) | No (1)  

Kailash Kumar Gautam   11 years AGO

24+9=33+18=51
30+9=39+18=57
alternate +9,+9*2,+9*3

Like? Yes (1) | No (1)  

Ashita Kaushik   11 years AGO

Each pair of 2 numbers in the series starting from the first number are with a difference of 6 such as:
24,30: the difference is 6
33,39: the difference is 6
51, 57: similarly the difference is 6
so the correct answer is option 2 which is 57

Like? Yes (1) | No (1)  

Arnab Nandy   11 years AGO

Here is pattern
2+4=6
3+0=3
3+3=6
3+9=12
5+1=6
so answer is 57

Like? Yes (1) | No (1)  

GIRISH.H.P   11 years AGO

2+4=6:24+6=30
3+0=3:30+3=33
..
..
5+1=6:51+6=57

Like? Yes (1) | No (1)  

janardhan babu   11 years AGO

diffences: 6,3,6,12
next differences: 6,3,6,12,6,12,..
so 57-51=6

Like? Yes (1) | No (1)  

amit bhagat   11 years AGO

24,30,33 - here the second term is increased by 6 in comparision to first term and the third term is increased by 3 in comp. to second term.

39,51,..- following the same order as above here we get 57 after 51

Like? Yes (1) | No (1)  

khushboo singh   11 years AGO

24 2+4=6
30 3+0=3
33 3+3=6
39 3+9=12 1+2=3
51 5+1=6
57 5+7=12 1+2=3

Like? Yes (1) | No (1)  

asha   11 years AGO

24+9=33, 33+18=51
30+9=39, 39+18=57

Like? Yes (1) | No (1)  

Rats   11 years AGO

consist of two seq.
24(+9),33(+18),51
30(+9),39(+18),57....Ans

Like? Yes (3) | No (4)  

Ramanand Yadav   11 years AGO

24,30,33,39,51....
30-24=6,difference of 6
33-30=3,difference of 3, differnce decrease by half from previous difference
39-33=6
51-39=12
similarly here difference of 6,12 now difference should be decrease by half from previous one
that is 51+6=57

Like? Yes (1) | No (2)  

Dipika Singh   11 years AGO

as 24=>2+4=6
so 6+24=30,
30=>3+0=3,30+3=33
33=>3+3=6,6+33=39
39=>3+9=12,12+39=51
so next,51=>5+1=6,
6+51=57
ans=> option 2

Like? Yes (2) | No (3)  

GAYATHRI   11 years AGO

8*3,10*3,11*3,13*3,17*3..

91*3=57

Like? Yes (1) | No (2)  

08 Nov 2013 Find the ratio

A wire of length 42 cm. is turned to form a
1) square
2) circle
Find out the ratio of side of the square and radius of the circle
(Given Pie = 3.14)

OPtion

1) 0.32
2) 3.14
3) 0.64
4) 0.99
5) 2.00
6) 1.75
7) 4.13
8) 1.57
9) 1.00
10)0.50

Solution

Since same wire is used to form square and circle, therefore
Perimeter of square = Circumference of circle
4 Side = 2*Pie*R
Hence
Side / R = 1.57

option 8)

Correct Option: 8 Best Solution (50)

Raisul Alam   11 years AGO

The length of the wire is 42 cm. So after turning into square let the length of the each side of the circle is a cm. Now 4a=42 and a=42/4. So the length of the each side of the square is 42/4 cm.
But when it turned into circle its circumference will be 42 cm.
Let radius of the circle is r cm
Hence 2*pie*r=42 so r=42/(2*3.14), given pie=3.14
So the ratio of side of the square and radius of the circle is---
42/4 : 42/(2*3.14) which is 1.57 and option 8 is the answer.

Like? Yes (13) | No (2)  

arijit sarkar   11 years AGO

if 42cm wire turns into square then side of the square is 42/4

if 42 cm long wire turns into circle then
2piR=42
R=42/2pi

so ratio of (42/4)/(42/2pi)= 1.57

Like? Yes (7) | No (1)  

Rats   11 years AGO

let side of square=a
and radius of circle=r
4a=42
a=42/4.....(1)
2(pi)r=42
r=42/2(pi)....(2)
ratio=a/r
=(42/4)/(42/2(pi)) (From 1 & 2)
=2(pi)/4
=pi/2
=3.14/2
=1.57........Ans

Like? Yes (5) | No (2)  

Rahul Gupta   11 years AGO

for Square 4*a = 42=>a=42/4
for Circle 2*pi*r=42=>r=21/pi
Ratio:
a/r=42*pi/21*4=1.57
8)1.57 Right Answer

Like? Yes (3) | No   

ramneet kaur   11 years AGO

side of square= 4a
so a=42/4 = 10.5
and perimeter of circle = 2*pi*r
so r = 42/(2*3.14) = 6.6818
so ratio of side of square / radius of circle = 10.5 / 6.6818 = 1.57
so ans is 1.57 i.e. option 8

Like? Yes (3) | No   

Ashfaque Hussain   11 years AGO

Side of Square = 42/4 = 10.5
Radius of Circle = 42/2*3.14 = 6.68

Ratio = 10.5/6.68 = 1.57

Like? Yes (4) | No (2)  

Prakash kumar   11 years AGO

length of 1 side of square =42/4
radius=42/2*pi
ratio= (42/4)/(42/2*3.14)
= 1.57

Like? Yes (2) | No   

Lavankumar Reddy   11 years AGO

Circumference of square is 4s=42
then side s=42/4=10.5
Circle circumference is 2Ï€r=42
then radius r=42/2Ï€=21/3.14= 6.68789
then ratio is 10.5/6.68789 = 1.57

Like? Yes (2) | No   

SHAIK SADDAM HUSSAIN   11 years AGO

(42/4)/(42/6.28)

Like? Yes (2) | No   

ArunKumar   11 years AGO

Wire length = 42
Then side of sqare = 42/4 = 10.5
Cicum of circle = 2* pi * r = 42
2 * 3.14 * r =42
r =6.68
Ratio = 10.5 / 6.68
= 1.57

Like? Yes (2) | No   

praneeth   11 years AGO

when the wire is turned to form a circle and square,then length becomes circumference.
now,2*pie*r=42;r=6.68
4*s=42;s=10.5
ratio of side of the square and radius of the circle is 10.5/6.68=1.57

Like? Yes (2) | No   

Jasmine Khan   11 years AGO

perimeter of square=4*side
42=4*side
side=42/4=10.5......(1)
perimeter of circle=2*pi*r
42=2*3.14*r
r=21/3.14=6.69........(2)
now from (1) and (2)
side/r=10.5/6.69=1.57

Like? Yes (2) | No   

Janshi   11 years AGO

side of square=42/4=10.5
circumference of circle,2*pi*r=42
r=6.687
ratio=10.5:6.687
=1.57

Like? Yes (1) | No   

VIKASH KUMAR SHARMA   11 years AGO

perimeter of square = perimeter of circle = 42 cm
th4 side of the square = 42/4 = 10.5
rad of circle = 42/2*pi =42/6.28
th4 the ratio will be (10.5)/(42/6.28)
= 1.57 ans

Like? Yes (1) | No   

Ranjit Somisetty   11 years AGO

a/r=1.57

Like? Yes (1) | No   

vikash kumar   11 years AGO

42/4=10.5
r=42/2*3.14

10.5/21*3.14=1.57

Like? Yes (1) | No   

Shrikant kumar   11 years AGO

side length of sq = 42/4
rad = 42/2*3.14
ratio= 1.57

Like? Yes (1) | No   

hitesh kumar gupta   11 years AGO

length of wire = 42 cm
for square
circumference of square = 4*a = 42
a = 42/4
for circle
circumference = 2 *pi*r = 42
r = 42/(2*pi)
now a/r = pi/2 = 1.57

Like? Yes (1) | No   

Mahesh   11 years AGO

The perimeter of the square is 42, hence the side of the square is 42/4 = 21/2

The circumferenceof the circle i.e., 2 PI r = 42, hence r = 42 /2 * 3.14

The required ratio is 21/2 : 21/3.14
= 3.14:2 = 1.57:1

Like? Yes (1) | No   

KD   11 years AGO

Case 1:When It is turned to Square
42 cm is the perimeter of the square.
so,4a=42
a=42/4

Case 2: Now when its turned into a Circle
Circumference is 42 cm
so 2*pi*r=42
or, r=42/(2*pi)

So the ratio =(42/4)/(42/(2*pi))=1.57 is the ans.

Like? Yes (1) | No   

Rahul Goyal   11 years AGO

Square -- 42/4 = 10.5
Circle -- 147/22 radius
Ratio. -- 10.5/(147/22) = 1.57

Like? Yes (1) | No   

prasanjit sarkar   11 years AGO

sides of square=42/4=10.5
circumference of circle=2*3.14*r
=> r=42/2*3.14
=> r=6.687
so ratio will be 10.5/6.687=1.5702

Like? Yes (1) | No   

PINKY   11 years AGO

side=42/4
radius=42/2*3.14
ratio=1.57

Like? Yes (1) | No   

Jyothi   11 years AGO

a=42/4=10.5
r=40/(2*3.14)=6.688
ratio=10.5/6.688=1.57

Like? Yes (1) | No   

PUNEESH AGRAWAL   11 years AGO

the perimeter of square and the circumference of the circle will be equal to 42, hence the side of the square and radius of the circle can be calculated using 4l and 2*pie*R formulae. and hence ratio can be calculated and the answer would come out to be 1.57.

Like? Yes (1) | No   

kakali sarkar   11 years AGO

the side of the square will be =42/4=10.5
for circle 2*3.14*r=42 so r=6.687
the ratio will be (10.5/6.687)=1.57

Like? Yes (1) | No   

Lavan   11 years AGO

Circumference of square is 4s=42
then side s=42/4=10.5
Circle circumference is 2Ï€r=42
then radius r=42/2Ï€=21/3.14= 6.68789
then ratio is 10.5/6.68789 = 1.57

Like? Yes (1) | No   

palagatisriharshithareddy   11 years AGO

perimeter of the square is=4a
42=4a
a=10.5
circumference of the circle=2(pi)r
42 = 2(pi)r
r=21/pi
ratio=10.5(3.14)/21=1.57

Like? Yes (1) | No   

Nitin rahtor   11 years AGO

besause parameter of square 4*side=42 then side=10.5
and circle parameter 2*3.14*r=42 then r=6.6878
then side/radius=1.57

Like? Yes (1) | No   

Grishma Shah   11 years AGO

Side of square is
4a=42
A=10.5
Radius of circle is
2pi*r=42
R=6.678

Ratio=10.5/6.678=1.57

Like? Yes (1) | No   

Devendra Marghade   11 years AGO

side of the square=42/4=10.5
radius of the circle=42/2*3.14=6.687
ratio of side of the square and radius of the circle=10.5/6.687= 1.57

Like? Yes (1) | No   

sreetej   11 years AGO

side of a square a = 42/4;as 42 is the perimeter of the square.
and perimeter of a circle is 2(3.14)r=42
so ratio of a/r=1.57

Like? Yes (1) | No   

b.s.venkatesh   11 years AGO

4a=42 so a 10.5
2*22.7*r=42 so a 6.681
therefore 10.5/6.681
=1.57

Like? Yes (1) | No   

batsal   11 years AGO

for square 4*side of square=42, side of square is 10.5
for circle, 2*pie*r=42, r=6.68
ratio is 10.5/6.68=1.57

Like? Yes (1) | No   

Saket chhitij   11 years AGO

side of square=42/4
and radius of circle=42/2 pi

Like? Yes (1) | No   

mohini gupta   11 years AGO

side of square=42/4=10.5
2*pi*r=42;r=6.68
10.5/6.68=1.57

Like? Yes (1) | No   

Saurabh Keshri   11 years AGO

side of square=42/4=10.5

2*3.14*r=42
r=21/3.14
=6.6879
ratio= 10.5/6.6879

Like? Yes (1) | No   

manish agrawal   11 years AGO

side of square= 42/4= 10.5
radius of cicle
2*pi*r=42, r=6.7
10.5/6.7=1.57

Like? Yes (1) | No   

Aakash Kumar   11 years AGO

10.5/6.69

Like? Yes (1) | No   

Praveen   11 years AGO

side = 42/4
radius= 42/6.28
ratio=6.28:4
==>1.57

Like? Yes (1) | No   

Hemavathi N   11 years AGO

when a wire is turned into square,
length of each side of a square=10.5 cm
length of wire is 42 cm,
hence circumference of circle=42 cm
2(pie)r=42
r=6.6879
therefore,ratio of side of square and radius of circle=10.5/6.6879
=1.57

Like? Yes (1) | No   

Yapadinne Raju   11 years AGO

A wire of length =42 cm
it is turned to square then side of square a=42/4
=10.5
and turned to circle then circumference=42
2*3.14*r=42
r=6.6879
then ratio=10.5/6.6879=1.57

Like? Yes (1) | No   

udit singh   11 years AGO

side of square=42/4=10.5
radius=
2*3.14*r=42
r=6.68
ratio=10.5/6.68=1.57

Like? Yes (1) | No   

amit bhagat   11 years AGO

bcoz
4*side=42
2*3.148*r=42

on dividing we get 1.57

Like? Yes (1) | No   

ankit mudgil   11 years AGO

for circle 2*PIE*r=42, r=6.69



for square 4*a=42, a=10.5



a/r = 1.57

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Suraj Singh   11 years AGO

2*pi*r/4*d=1

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khushboo singh   11 years AGO

(42/4)/(42/2*3.14)

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gowri yendapalii   11 years AGO

the total wire length is 42 is converted into sqr i.e)total the perimeter of the sqr is 4a=42,a=side
a=42/4=21/2;
later the wire is converted into circle so the perimeter of the corcle is 2*pi*r=42;
r=21*7/22;
now the ratio is a\r=(21/7)/(21*3.14)=1.57;

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SHIVANI PRAKASH   11 years AGO

s/r=(42/4)/(42/2*3.14)
=1.57

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a.k.gayathridevi   11 years AGO

side of square s=42/4=10.5
circumference=2*pi*r=42
r=42/(2*3.14)=6.69
s/r=10.5/6.69=1.57

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