M4maths Previous Puzzles

13 Mar 2014 Solve

33 is subtracted from one third of a number, then the obtained number is increased by 250 %. 5/7 of the number obtained is multiplied by 3/2 then its half is increased to 120 %. when 225 is decreased from the obtained number, zero is obtained, then the number is

OPtion

1) 237
2) 6543
3) 96
4) 453
5) 465
6) 399
7) 600
8) 300
9) 666
10)None of these

Solution

[{(?/3)-33}*3.5*(5/7)*(3/2)*(1/2)*1.2]-225=0 => ?=399
Note that number is increased by 250 % means the number will become 100% +250% = 350% of the original number for this we should multiply the number to 3.5. Similarly number is increased to 120 % means the number will become 120% of the original number for this we should multiply the number to 1.2

Option 6)

Correct Option: 6 Best Solution (9)

azharshahid01@gmail.com   10 years AGO

Let the number is x.
Thus, according to question, (1/3*x-33)*(1+2.5)=y.
Now, 1/2(5/7*y*3/2)*1.2
Substitute the value of y in above equation-
1/2(5/7*((1/3*x-33)*(1+2.5))*3/2)*1.2=225
on solving, x= 399

Like? Yes (11) | No   

virendra dubey   10 years AGO

[(x/3-33)250/100*5/7*3/2*1/2*120/100]-225=0

Like? Yes (3) | No   

Vivek Jain   10 years AGO

1.2*1/2*3/2*5/7*3.5(x/3-33)=225
so x=399
when increased 'by' 250% a number , the multiplying factor will be 3.5 but when number is increased 'to' 120% it will be 1.2, only this two are the considerations of this question.. rest is simple equation .

Like? Yes (2) | No   

Pulkit Dureja   10 years AGO

x=3*((225*2/3*10/12*7/5*2*10/35)+33)

Like? Yes (1) | No   

raja   10 years AGO

take value as x
according to given conditions
(((x/3-33)+((x/3-33)250)/100)*(5/7)*(3/2))/2)*120/100-225=0
solve for x then we get x =399

Like? Yes (1) | No   

AVIJIT   10 years AGO

let, number is x.
so equation is (x/3-33)*(350/100)*(5/7)*(3/2)*(1/2)*(120*100)-225=0
solving this equation we will get number is 399.
note:: 1st increment is by 250% means to 350%,but next increment is by 20% means to 120%.

Like? Yes (1) | No   

Devendra Marghade   10 years AGO

If number=x, then
[(x/3)-33]*(3.5)*(5/7)*(3/2)*(1/2)*(1.2)=225
3x-297=900
x=1197/3= 399

Like? Yes (1) | No   

Kaustubh karekar   10 years AGO

when you solve the answers 399 perfectly matches with the given conditions and hence OPTION 6 is correct

Like? Yes (1) | No   

Satish Zod   10 years AGO

Suppose the number is A
[{(A/3 – 33) + [(A/3 – 33) x 2.5]} x 5/7 x 3/2 x 1/2 x 1.2] – 225 = 0
Solving this,
{(A/3 – 33) + [(A/3 – 33) x 2.5]} = 350
3.5A = 1396.5
A = 399
i.e. Sr. No. (6)

Like? Yes (1) | No (1)  

12 Mar 2014 Solve

A cylinder of radius and height both equal to 10 cm. made by paper is unfolded to form a plane sheet of paper. If circumference of a circle is 2*Pi*R, then area of plane paper sheet is-

OPtion

1) 100 Pi
2) 400 Pi
3) 300 Pi
4) 200 Pi
5) 20 Pi
6) 10 Pi
7) 40 Pi
8) 2 Pi
9) 5 Pi
10)None of these

Solution

When we unfold a cylinder, its height becomes breadth of paper and circumference becomes length of paper,
therefore area is l×2*Pi*R = 10×2*Pi*10 = 200*Pi

Correct Option: 4 Best Solution (0)

11 Mar 2014 Solve

The side of a square exceeds the side of another square by 4 cm and the sum of the area of the two squares in 400 sq cm. Find the dimension of the square.

OPtion

1) 12cm, 18cm
2) 8cm, 12cm
3) 13cm, 17cm
4) 14cm, 18cm
5) 12cm, 16cm
6) 12cm, 20cm
7) 6cm, 10cm
8) 10cm, 14cm
9) 12cm, 15cm
10)None of these

Solution

Let side of smaller square = x cm
The side of other square = (x+4) cm
The sum of area of square = x^2+(x+4)^2 = 400
Solve we get
x = 12 and x = -16 (-16 cm not possible because length cannot be negative)

option 5)

Correct Option: 5 Best Solution (81)

YUVAN SATHAIAH   10 years AGO

side of the smaller square is x cm
side of the larger square=(x+4)cm
Area of the smaller square+Area of the larger square=400 cm^2
x^2+(x+4)^2=400
x^2+x^2+8x+16=400
2x^2+8x-384=0
x^2+4x-192=0
x^2+16x-12x-192=0
x(x+16)-12(x+16)=0
(x+16)(x-12)=0
x+16=0 or x-12=0
x=-16 or x=12
x=12
side of the smaller square is 12cm
side of the larger square=(4+12)=16cm

option is 5)12cm,16cm

Like? Yes (8) | No (4)  

S.SHAFI   10 years AGO

Let the side of the smaller square be x cm.

Side of the larger square = Side of the smaller square + 4 cm

∴ Side of the larger square = (x + 4) cm

Given, Area of the smaller square + Area of the larger square = 400 cm2

x^2 + (x+4)^2 = 400

by solving we get x=12

Side of the smaller square = 12 cm

Side of the larger square = (x + 4) cm = (12 + 4) cm = 16 cm

Like? Yes (5) | No (2)  

madanpal vishwakarma    10 years AGO

let assume that the side of first square is x then second square side is (x+4)

so according to question

x^2+(x+4)^2=400

x^2+(x^2+8x+16)=400

so
2x^2+8x=384

x^2+4x-192=0

after solving we get
x=12,x=16

so option 5 is correct.
12^2+(12+4)^2=400

Like? Yes (4) | No (1)  

rajesh   10 years AGO

square=x say
another sqaure=x+4
x^2+(x+4)^2=400
then x=12,16

Like? Yes (1) | No   

Sandeep Kumar   10 years AGO

let side of 1st sq. = x
side of 2nd sq. = x+4

x^2 + (x+4)^2 = 400
x= 12, -16

so, sides = 12, 16

Like? Yes (1) | No   

shaiffali Aggarwal   10 years AGO

let the side of first square is x
n another is x+4
x^2 + (x+4)^2= 400
by solving we get x=12

Like? Yes (1) | No   

Sunku Mounika   10 years AGO

Side of the another square is X.Then side of the first square is X+4.
Then sum of the areas of the squares=400
i.e. 2x^2+4x-192=0
By solving the equation we get x=12.
The another square side is 16.
So, ans is 12 and 16.

Like? Yes (1) | No   

Krsihna Prasad   10 years AGO

Area of square =l^2
12*12+16*16=400

Like? Yes (1) | No   

kiruthika   10 years AGO

Let the side of the smaller square be x cm.

Side of the larger square = Side of the smaller square + 4 cm

∴ Side of the larger square = (x + 4) cm

Given, Area of the smaller square + Area of the larger square = 400 cm2

x^2+(x+4)^2=400
x^2+x^2+8x+16-400=0
2x^2+8x+384=0 div by 2
x^2+4x-196=0
==> x= -16 , 12
x=12 and x+4= 16
so the ans is x= 12 ,16 option 5

Like? Yes (1) | No   

Manikumar R   10 years AGO

14^2+16^2=400

Like? Yes (1) | No   

MD SOHAIL AKHTER   10 years AGO

let the side of one square be 'x'
the side of other square= x+4

A/Q
x^2+(x+4)^2=400

on solving for x, we get;
x=12
x+4= 16

so the correct option is (5)

Like? Yes (1) | No   

TRIMURTULU   10 years AGO

first square area=a
next square area=4+a
sum of areas=a^2+16+a^2+8a=400
solve
a=12
b=a+4=16

Like? Yes (1) | No   

akansha   10 years AGO

let the sides of d 2 squares be x and (x+4)
now x^2 + (x+4)^2 = 400 (given)
solving this,we get
x=12 and x+4 as 16

Like? Yes (1) | No   

virendra dubey   10 years AGO

let side1=x hence side2=x+4;
hence x^2+(x+4)^2=400;
so x=12 x+4=12+4=16
so ans=12cm,16cm

Like? Yes (2) | No (1)  

Soumya   10 years AGO

let smaller square be Xcm
larger square is (X+4)cm
given sum of both squares is 400 sq.cm
i.e.,X^2+(X+4)^2=400
X^2+X^2+16+8X=400
=> 2X^2+8X-384=0
=> X^2+4X-192=0
=> X^2+16X-12x-192=0
=> X(X+16)-12(X+16)=0
=> (X+16)(X-12)=0
so X=-16(but we can't take negative value for area) X=16,12.

Like? Yes (1) | No   

Mahalakshmi   10 years AGO

let area of first square be x^2
area of second square be (x+4)^2
from question we form equation x^2 + (x+4)^2 =400
solving it we get x=12 so another square exceed by 4 so its values is 16
so option 5)12,16

Like? Yes (1) | No   

Pallekonda Rajesh   10 years AGO

area of one square=a^2
area of another square=(a+4)^2
so a^2+(a+4)^2=400 if we solve this equation
we will get a=12,and another 12+4=16
12cm,16cm

Like? Yes (1) | No   

abhilasha   10 years AGO

a-b =4
a^2 + b^2 = 400
a = 12, b = 16

Like? Yes (1) | No   

Devendra Marghade   10 years AGO

If side of one square=x, then
Side of another square=x+4
Given x^2+(x+4)^2=400
x^2+4x-192=0
(x+16)(x-12)=0
x=12
Side of another square=x+4=12+4=16

Like? Yes (1) | No   

Jigyasa Kumar   10 years AGO

a-b =4
a^2 + b^2 = 400
a = 12, b = 16

Like? Yes (1) | No   

Aarush Singh   10 years AGO

a-b =4
a^2 + b^2 = 400
a = 12, b = 16

Like? Yes (1) | No   

Rahul Das   10 years AGO

in this option only 5 option has total area 400
12^2+16^2=400

Like? Yes (1) | No   

sadhikbhasha   10 years AGO

Let the side of the smaller square be x cm.

Side of the larger square = Side of the smaller square + 4 cm

∴ Side of the larger square = (x + 4) cm

Given, Area of the smaller square + Area of the larger square = 400 cm2



Side of the smaller square = 12 cm

Side of the larger square = (x + 4) cm = (12 + 4) cm = 16 cm

Like? Yes (1) | No   

azharshahid01@gmail.com   10 years AGO

Suppose side of first square is x then side of another square is x+4.
According to question (x)^2+(x+4)^2=400.
On solving above equation x=12.
Sides of squares are x and x+4,
So side of squares are 12 and 16 cm.

Like? Yes (1) | No   

jairaj   10 years AGO

area of a square =a^2,
if the side of the square is exceeds by 4cm then side of the square is =a+4 cm
then area of square is =(a+4)^2
sum of the area of the two squares =
(a^2)+(a+4)^2=400
by solve the above eq,we can get 12,16cm

Like? Yes (1) | No   

ravi   10 years AGO

side=x & x+4

sum of areas=x^2+x^2+2x+16=400

solving we get x=12
sides=12 & 16

Like? Yes (1) | No   

Dinesh thatti   10 years AGO

Let the side of the smaller square be x cm.

Side of the larger square = Side of the smaller square + 4 cm

Side of the larger square = (x + 4) cm

Given, Area of the smaller square + Area of the larger square = 400 cm2

Side of the smaller square = 12 cm

Side of the larger square = (x + 4) cm = (12 + 4) cm = 16 cm

so answer is 12cm,16cm

Like? Yes (1) | No   

Varunraj Reddy   10 years AGO

By the given conditions the equation becomes
a^2+(a+4)^2=400 sq.cm.
by solving we get a=12cm,16cm
option 5.

Like? Yes (1) | No   

anubhav verma   10 years AGO

X^2+(X+4)^2=400
X
X+4
AREA
X^2
(X+4)^2
2*X^2+8X-384=0
X^2+4X-192=0
(X-12)*(X+16)=0
X=12
ANS...1)12
2)12+4=16

Like? Yes (1) | No   

J.DHANDAPANI   10 years AGO

Let the side of a square be x.Then the side of another square is (X+4).
SO,by data,x^2+(X+4)^2=400,
Solving the quadratic equation we get,x=4.
so,the dimensions are 12cm &16cm

Like? Yes (1) | No   

SHEREENA NISHAD   10 years AGO

take x and x+4 as sides of squares
sum of area = x^2 + (x+4)^2 = 400
2x^2 + 8x + 16 = 400
x= -16 & 12
So Ans x=12
sides of squares 12cm and 16cm

Like? Yes (1) | No   

DHIRENDRA    10 years AGO

12^2+16^2=144+256=400

Like? Yes (1) | No   

Rajasekhar Reddy   10 years AGO

let the side of square be x cm
then the side of another square be x+4 cm
the sum of the areas of the two squares is 400 cm^2
x^2 + (X+4)^2 = 400

by solving we get x = 12
by adding 4 we get x = 16

Like? Yes (1) | No   

Saidinesh   10 years AGO

x^2+(x+4)^2=400;
solving x =12,16

Like? Yes (1) | No   

ashish kumar   10 years AGO

let x,x+4 is the side of 2 square.
x^2+(x+4)^2=400
by solving or by checking with the options
12^2+16^2=400

Like? Yes (1) | No   

rakesh   10 years AGO

there is only one option which gives sum of the squres as 400

Like? Yes (1) | No   

naveen reddy   10 years AGO

option 5=>12^2+16^2=400

Like? Yes (1) | No   

Prabhat Yadav   10 years AGO

Ans is 5

Like? Yes (1) | No   

VIMALRAJ V   10 years AGO

side of 1st square=X
Side of 2nd square=X+4
Sum of square of area=400
i.e. (X^2)+((X+4)^2)=400
X^2+X^2+16+8X=400
2X^2+8X+16=400
on simplify
X=-16 & X=12 since X can't be negative
Therefore X=12
side of 2nd square=X+4=12+4=16
Therefore dimensions are 12cm and 16cm.

Like? Yes (1) | No   

sirisha aryasomayajulu   10 years AGO

let the side of first square be 's'.hence the side of second square becomes 's+4'.
given that s^2+(s+4)^2=400
solving the equation,we get the final equation as follows:
s^2+4s-192=0
using the formula for solving equations we get
s=12,s+4=16

Like? Yes (1) | No   

Gayathri   10 years AGO

x^2+(x+4)^2=400
By solving the above equation,we get
2x^2+8x-384=0
Further solving,
x=12,-16not considered
s0 take 12as answer

Like? Yes (1) | No   

AMIT KUMAR   10 years AGO

let side of square=xcm
other square=x-4cm
a/c question,
x^2+(x-4)^2=400
2x^2-8x=386
x^2-4x=193
x=16.03
other square=12.03
dimension=root2*side=root2*12.03=17(approx)
root2*side=root2*16.03=22(approx)

Like? Yes (1) | No   

meghana   10 years AGO

let sq1 and sq2 as square1,square2.
assume sq1 side =a
then sq2 side=4+a.
given that area of sq1 and sq2 is 400.
area of square = side^2
so,a^2+(4+a)^2=400
solve above equation : a=12
that means side of sq1 = 12 cm
side of sq2=4+a=4+12 =16 cm

Like? Yes (1) | No   

DHAKAD NEETENDRA SINGH   10 years AGO

let I square has side x cm
and II has x+4 cm
according to question,
x^2+(x+4)^2=400
x= 12,16 ans...

Like? Yes (1) | No   

Vikram Saini   10 years AGO

a^2+(a+4)^2=400
solving it we get
a=12
and b=a+4=16
so answr is 12,16

Like? Yes (1) | No   

modem mounika   10 years AGO

area of 1st square=x*x
area of 2nd square=(x+4)*(x+4)
so
x^2+(x+4)^2=400
then X is 12
so
12 and 16 are correct

Like? Yes (1) | No   

RAJ KAMAL   10 years AGO

a^2+(a+4)^2=400
where a is the side of one of the squares..............
and(a+4)is the side of another............
solving this eqn would yield a=12 and (a+4)=16................the required answer

Like? Yes (1) | No   

Gnanaprakash S   10 years AGO

The side of the is increased by 4cm.
x^2+(x+4)^2=400.
After solving this equation we get x+2=14
then x=12,x+4=16
SO,option 5)12cm,16cm

Like? Yes (1) | No   

deepak kumar   10 years AGO

normal quadratic equation.

Like? Yes (1) | No   

ashish kumar singh   10 years AGO

it can be easily solved by the given options, as sum of area of squares is 400,
then to satisfy x*x+y*y=400
and only one can satisfy this equation by put x=12 an y=16,
12*12=144 and 16*16=276
276+144=400.
thus answer is 12 and 16cm

Like? Yes (1) | No   

NIDHI MEHLA   10 years AGO

x^2 +(x+4)^2 = 400
solving for value of x we get x = 12 and -16
thus x = 12 neglecting -16.
hence x=12 and x+4=16

Like? Yes (1) | No   

irfan alam   10 years AGO

let 1st square side is x , and second\'s side is x-4
by given values

x*x + (x-4)(x-4)=400
on solving we get solution for x & x-4

Like? Yes (1) | No   

Kowshik Sarker   10 years AGO

let the side of the first square is (x+4) and second one is x.So the equation becomes...
(x+4)^2+x^2=400
solving this we get x^2+4x-192=0
from this we get x=12 and x=-16
so sides will be 12cm and 16cm.

Like? Yes (1) | No   

Hemalatha   10 years AGO

on solving.
a^2+4a-199=0

Like? Yes (1) | No   

ARJYA HALDER   10 years AGO

let, the side of smaller square is x.
So, the side of the bigger square is (x+4).
From question, x^2+(x+4)^2=400
Solving we get, x=12,-16.
Magnitude of side cannot be in negative.
So, x=12.
So, the dimensions of two squares are 12cm & 16cm.

Like? Yes (1) | No   

VIKASH RAY   10 years AGO

Let, the side of one square be- x cm
then the side of another square is (x-4) cm
then according to the given question ,
x^2+(x-4)^2=400
by solving this we get that option 5 is correct.

Like? Yes (1) | No   

P.Selva Dhasni   10 years AGO

area(x)+area(x+4)=400
x^2+(x+4)^2=400
(x-12)(x+16)=0
x=12,-16
so, dimensions are 12,16.

Like? Yes (1) | No   

SONU GUPTA   10 years AGO

Let the side of the smaller square be x cm.
Side of the larger square = Side of the smaller square + 4 cm
∴ Side of the larger square = (x + 4) cm
Given, Area of the smaller square + Area of the larger square = 400 cm2

Side of the smaller square = 12 cm
Side of the larger square = (x + 4) cm = (12 + 4) cm = 16 cm

Like? Yes (1) | No   

santhosh   10 years AGO

let the sides of the square are x,x+4
given x^2+(x+4)^2=400 => x=12
so other square side is 16cm

Like? Yes (1) | No   

vishnuvardhan   10 years AGO

x^2+(x+4)^2=400 (assume side of one square as x and another x+4)
x^2+x^2+8x+16=400
x^2+4x-192=0
x=12,-16
as side of square is always positive x=12
sides of squares are 12,16

Like? Yes (1) | No   

karthik hariharan   10 years AGO

square area formula is a^2
so here the 5th option is suitable for the answer that is 400sq cm

Like? Yes (1) | No   

Vivek Jain   10 years AGO

let sides be a and a+4;
so a^2 + (a+4)^2=400
a^2+4a-192=0
so a=12,-16
a=12 onlyhence other side will ve a+4=12+4=16
so option 5)12cm,16cm

Like? Yes (1) | No   

Rajat Goyal   10 years AGO

Clear from option.

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Sandeep Negi   10 years AGO

on justifying. .. x=12 other y=16

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Parthi Smith   10 years AGO

(a^2)+[(a+4)^2]=400
therefore,(a^2)+4a-192=0
a=12

Like? Yes (1) | No   

C.Aarthi   10 years AGO

x^2 + (x+4)^2 =400
2X^2 + 8x + 16=400
2X^2 + 8x - 384=0
x^2 + 4x - 192=0
x=12 & -16
x=12
sides=12 and 16 (option 5)

Like? Yes (1) | No   

srujana aitha   10 years AGO

consider side of square as x then
x^2+(x+4)^2=400
solving that x=12
so square sides are 12,12+4

Like? Yes (1) | No   

Komala.G   10 years AGO

Option (5)
assume side of square as b
The sum of the area of the two squares = area of 1st square + area of 2nd square
400 = b^2 + (b+4)^2
400 = b^2 + (b^2+16+8b)
400-16 = 2b^2 + 8b
384 = 2b^2 + 8b ------divide by 2
192 = b^2 + 4b
b^2+4b-192 = 0
b^2+16b-12b-192 = 0
b(b+16)-12(b+16) = 0
(b-12) (b+16) = 0
b = 12, -16

Like? Yes (1) | No   

mohd zakir   10 years AGO

X^2+4X-192=0

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Anucia Mary A   10 years AGO

12 square is 144
16 square is 256
the total of the square is 400
satisfies the condition
the difference between sides of the 2 squares are 4
so answer is option 5)12cm,16cm

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Greeshma Varghese   10 years AGO

let the side be x..then side of next square s (x+4)^2
x^2+x^2+8x+16=400
x^2+4x+8=200
by solving x=12...x+4=16

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Ghanshyam Gulati   10 years AGO

a^+(a+4)^2=400

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Snehasis   10 years AGO

Side of the first square is x then other should be x+4
Therefore, x^2+(x+4)^2 = 400
After solving,
x=12 and x=-16
A side of a square cannot be negative therefore x=12 then the other side is 16.

Like? Yes (1) | No   

vijay   10 years AGO

verify options s^2+4s+8=200.we get 200

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Abhishek   10 years AGO

let the side of first square be x cm
so next sqare having dimension=(x+4)

According to question
x^2+(x+4)^2=400
x^2+x^2+8x+16=400
x^2+4x-192=0
(x+16)(x-12)=0
so,x=-16,12
since,side of square can never be negative
hence,x=12 cm
and x+4=12+4=16 cm

so correct answer is option no.5

Like? Yes (1) | No   

Jaydeep Gupta   10 years AGO

x^2 + (x+4)^2 =400
by solving,we get x=12
and condition is satisfied with 12 and 16

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SaiKiranyaLakshmi   10 years AGO

area of a square=side*side
so
(12*!2)+(16*16)=400

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Udayan N Kothari   10 years AGO

Let x= 12 then x + 4 = 16

Now,

12^2 + 16^2 = 400
144 + 256 = 400
So, option 5 is correct.

Like? Yes (1) | No (1)  

Surya Narayana K   10 years AGO

Answer : 12cm and 16cm

Consider side of first square as x cm
then side of another square is (x+4) cm.

Sum of the area of the two squares is 400.i.e.,
x^2+(x+4)^2=400
=>x^2+x^2+8x+16-400=0
=>2x^2+8x-384=0
=>x^2+4x-192=0
=>(x-12)(x-16)=0
=>x=12,16

So ans is 12cm,16cm (Option 5).

Like? Yes (2) | No (2)  

ASHISH MITTAL   10 years AGO

x^2+(x+4)^2=400
2x^2+8x+16=400
x^2+4x-192=0
after solving we get x=16 and 12

Like? Yes (1) | No (1)  

SID PRASANTH KUMAR   10 years AGO

side of first square x and area x^2
side of second square x+4 and area (x+4)^2

sum of area's x^2 + (x^2+4^2+8x)=400
x will be 12 and x+4 will be 12+4=16

Like? Yes (1) | No (1)  

10 Mar 2014 Sequence

What is the next number of the following sequence
12, 24, 48, 816, 16212,.......

OPtion

1) 212442
2) 122442
3) 224412
4) 442212
5) 212244
6) 144222
7) 222144
8) 212424
9) 216224
10)None of these

Solution

12 = 12
1*2 2*2 = 24
2*2 4*2 = 48
4*2 8*2 = 816
8*2 1*2 6*2 = 16212
Similarly
1*2 6*2 2*2 1*2 2*2 = 212424

option 8)

Correct Option: 8 Best Solution (82)

Mahalakshmi   10 years AGO

12 => (1*2)(2*2)=24
24 => (2*2)(4*2)=48
48 => (4*2)(8*2)=816
816 =>(8*2)(1*2)(6*2)=16212
16212 =>(1*2)(6*2)(2*2)(1*2)(2*2)=212424
ans option in 8)212424

Like? Yes (11) | No (3)  

Dinesh thatti   10 years AGO

Multiply each individual digit of a number with \"2\"

12==> 1*2=2, 2*2=4, nd then combine d resul-->24
24==> 2*2=4, 4*2=8 --> 48
48==> 4*2=8, 8*2=16 --> 816
816==> 8*2=16, 1*2=2, 6*2=12 --> 16212
16212==> 1*2=2, 6*2=12, 2*2=4, 1*2=2, 2*2=4 --> 212424

So the next term is 212424

Like? Yes (7) | No   

neha agrawal   10 years AGO

6*2=12,1*2=2,8*2=16 so ans is 16212
similarly
2*2=4,1*2=2,2*2=4,6*2=12,1*2=2 so ans is 212424

Like? Yes (4) | No (1)  

Anusha Reddimalli   10 years AGO

1*2=2,2*2=4 ->24
2*2=4,4*2=8 ->48
.
.
.
1*2=2,6*2=12,2*2=4,1*2=2,2*2=4 ->212424

Like? Yes (3) | No   

vaishnavirj   10 years AGO

12*2=24
24*2=48
48*2=816(each single digit s multiplied and the result written as it is)
similarly,
816*2=16212
16212*2=212424

Like? Yes (3) | No   

madanpal vishwakarma    10 years AGO

follow the pattern multiply in every digit by 2 separately
1> 1 2
2> 1*2 2*2 =24
3> 2*2 4*2=48
4> 4*2 8*2 = 816
5>8*2 1*2 6*2 =16212
6> 1*2 6*2 2*2 1*2 2*2 = 212424

so option 8 is correct

Like? Yes (3) | No (1)  

mahima srivastava   10 years AGO

double of each digit= next number

Like? Yes (2) | No   

deepak kumar   10 years AGO

every digit is multiplied by 2

Like? Yes (2) | No   

sowmya   10 years AGO

12*2=24
24*2=48
48*2=816
816*2=16212
16212*2=212424 so ans is 212424

Like? Yes (2) | No   

ganesh saicharan rao   10 years AGO

12
24
48
816
16 32=16212
212 64=212 424

212424

Like? Yes (2) | No   

Saidinesh   10 years AGO

12.....first number 1 and second number 2
1*2=2,2*2=4;.....24;
2*2=4;4*2=8.......48;
4*2=8;8*2=16.......816;
8*2=16;1*2=2;6*2=12....16212;
1*2=2;6*2=12;2*2=4;1*2=2;2*2=4..212424(i.e 8th option)

Like? Yes (2) | No (1)  

TRIMURTULU   10 years AGO

12
keep second digit as it is i.e 2.
keep that two as first half for next number i.e 24
last half for the number 24 is by (2*last half of 12 i.e 2)
now we get 24 from 12 as
keep last half(2)and (2*last half)=24
from 24
4 and 2*4=48
from 48
8 and 16=816
from 816
16 and 2*81=16212
from 16212
212 and 2*162=212424

Like? Yes (2) | No (1)  

Varunraj Reddy   10 years AGO

12-->1*2 2*2-->2 4-->24
24-->2*2 4*2-->4 8-->48
similarly
16212-->1*2 6*2 2*2 1*2 2*2-->2 12 4 2 4-->212424
Option 8.

Like? Yes (1) | No   

ASHISH MITTAL   10 years AGO

multiply the each digit with 2

Like? Yes (1) | No   

Subhash chandra pal   10 years AGO

Double the each digit.

Like? Yes (1) | No   

Surya Narayana K   10 years AGO

Answer : 212424

Coding : Place*2
12: 1*2 2*2 =24
24: 2*2 4*2 =48
48: 4*2 8*2 =816
816: 8*2 1*2 6*2 = 16212
16212: 1*2 6*2 2*2 1*2 2*2 = 212424.

Like? Yes (1) | No   

Hemalatha   10 years AGO

1*2=2
6*2=12
2*2=4
1*2=2
2*2=4

Like? Yes (1) | No   

rakesh   10 years AGO

multiply each digit with 2 to get next no

Like? Yes (1) | No   

naveen reddy   10 years AGO

first one:12
the next number is double of each digit in previous one.
2nd:1*2,2*2=24
3rd:2*2,4*2=48
4th:4*2,8*2=816
5th:8*2,1*2,6*2=16212
6th:1*2,6*2,2*2,1*2,2*2=212424

Like? Yes (1) | No   

Snehasis   10 years AGO

just double each no:
like 12 = 1+1 and 2+2 = 4
likewise,
16212 = 1+1 6+6 2+2 1+1 2+2 = 212424

Like? Yes (1) | No   

kiruthika   10 years AGO

12, 24, 48, 816, 16212,....
multiply each digit by 2 ,
12--> 1x2=2 2x2=4 which gives 24
24--> 2x2=4 4x2=8 which gives 48
similarly
16212--> 1x2=2 6x2=12 2x2=4 1x2=2 2x2=4 which gives 212424,.... option 8

Like? Yes (1) | No   

NavyaBharathi   10 years AGO

Repeating half part of the previous number again and make double remaining half part

Like? Yes (1) | No   

Satish Zod   10 years AGO

Double each digit and place at the same position.
12, (1*2)(2*2), (2*2)(4*2),.........
16212, (1*2)(6*2)(2*2)(1*2)(2*2)
Answer is 212424 i.e. 8

Like? Yes (1) | No   

swethakottakota   10 years AGO

multiply each digit with 2..
1*2=2
6*2=12
2*2=4
1*2=2
2*2=4
212424

Like? Yes (1) | No   

Rudra Pratap Singh   10 years AGO

two times of each digit

Like? Yes (1) | No   

R Nandhini   10 years AGO

next number is obtained by multiplying each digit by 2 in previous number

Like? Yes (1) | No   

SIBNATH HALDER   10 years AGO

1st term 12
2nd term 24=12*2=24;
3rd term 48=24*2;
4th term 816=48*2 written as 4*2=8 & 8*2=16 so 816
similarly 5th term 16212=816*2 written as
8*2=16
1*2=2
& 6*2=12 so 16212
similarly 6th term will be 212424

Like? Yes (1) | No   

navpreet   10 years AGO

double of each digit

Like? Yes (1) | No   

akansha   10 years AGO

1 2 2 4 4 8 8 1 6 1 6 2 12
+1 2 +2 4 + 4 8 +8 1 6 + 1 6 2 12
---- ---- ---- ------- ----------
2 4 4 8 8 16 16 2 12 2 12 4 24

Like? Yes (1) | No   

Shyam Sunder   10 years AGO

Multiply each digit of each preceding number by 2 as

12, next term is=(1*2)(2*2)=24
24, next term is=(2*2)(4*2)=48
48, next term is=(4*2)(8*2)=816
816, next term is=(8*2)(1*2)(6*2)=16212
16212, next term will be=(1*2)(6*2)(2*2)(1*2)(2*2)=212424

so, option 8) is correct answer

Like? Yes (1) | No   

Rajasekhar Reddy   10 years AGO

next number is
1*2 6*2 2*2 1*2 2*2 = 212424

Like? Yes (1) | No   

MD    10 years AGO

in this question carry doesn't overflow on the right side. if it's carry then simply write that no.

Like? Yes (1) | No   

krishnapriya   10 years AGO

12=1x2 2x2=24
24=2x2 4x2=48
48=4x2 8x2=816
816=8x2 1x2 6x2=16212
16212=1x2 6x2 2x2 1x2 2x2=212424

Like? Yes (1) | No   

virendra dubey   10 years AGO

every position of term is obtain after multiplying 2 in the position of previous term..
1_2= 2_4;
2_4=4_8;
4_8=8_16;
8_1_6=16_2_12;
1_6_2_1_2= 2_12_4_2_4;

Like? Yes (1) | No   

Krishna Kumar T   10 years AGO

Answer falls by multiplying each number with 2 where remaining should not be added with result of next digit.

Like? Yes (1) | No   

shilpi   10 years AGO

double of digits

Like? Yes (1) | No   

Vikash jain   10 years AGO

According to series follow this logic like
12,24,48,816,16212
(1)12=1*2,2*2=>24
(2)24=2*2,4*2=>48
(3)48=4*2,8*2=>816
(4)816=8*2,1*2,6*2=>16212
(5)16212=1*2,6*2,2*2,1*2,2*2=>212424
ans is (8)

Like? Yes (1) | No   

SONU GUPTA   10 years AGO

12=24,24=48,48=816, 816=16212, 16212=212424

Like? Yes (1) | No   

jyoti mahansaria   10 years AGO

in next no each digit is multiplied by 2

Like? Yes (1) | No   

sravya   10 years AGO

1st digit in 1st number+1=1st digit in second number
2nd digit in second number=double of the second digit in first number.it goes on in the sequence
coming to 16212=(1+1)(2*6212)
=212424

Like? Yes (1) | No   

abhilasha   10 years AGO

all the individual digits should be multipled by 2

Like? Yes (1) | No   

Aarush Singh   10 years AGO

all the individual digits should be multipled by 2

Like? Yes (1) | No   

Jigyasa Kumar   10 years AGO

all the individual digits should be multipled by 2

Like? Yes (1) | No   

ponprakash   10 years AGO

212424

Like? Yes (1) | No   

ADVAITA BASAK   10 years AGO

multiply every digit with 2 and place them serially....

Like? Yes (1) | No   

kiran kumar reddy yanamala   10 years AGO

add each digit of the num with same digit to get nxt seq

Like? Yes (1) | No   

azharshahid01@gmail.com   10 years AGO

Each number is combination of 2 numbers.Like-
12 is 1 and 2.
24 is 2 and 4.
48 is 4 and 8.
816 is 8 and 16.
16212 is 16 and 212.
Every next number is combination of last number's 2 number and double of 2 number.
So, the next number is 16 and 2*212 i.e. 16424.
so 16424 is answer.

Like? Yes (2) | No (1)  

Kundan Dhande   10 years AGO

multiply each digit with 2.
so 16212= 1*2 6*2 2*2 1*2 2*2= 212424

Like? Yes (1) | No   

Sandeep Kumar   10 years AGO

12 = 1*2, 2*2 = 24
24 = 2*2, 4*2 = 48
similarly.....
16212 = 1*2, 6*2, 2*2, 1*2, 2*2 = 212424

Like? Yes (1) | No   

AMIT KUMAR   10 years AGO

1*2 2*2 24
2*2 4*2 48
2*2 4*2 48
4*2 8*2 816
8*2 1*2 6*2 16212
1*2 6*2 2*2 1*2 2*2 212424
8) 212424

Like? Yes (1) | No   

Gudivada sunitha   10 years AGO

every digit of each no is doubled. 12 is 1+1 and 2+2 = 24
similarly 2+2=4 and 4+4=8
in the same way each digit of 16212 is doubled

Like? Yes (1) | No   

Srinath   10 years AGO

multiply each digit by 2

Like? Yes (1) | No   

saisudha sarva   10 years AGO

1*2=2
6*2=12
2*2=4
1*2=2
2*2=4

Like? Yes (1) | No   

preeti singh chauhan   10 years AGO

16212* 2
multiply each digit seperatly....
like....2*2=4 then 2*1=2 then 2*2=4 then 2*6=12 then 2*1=2 so the answer is
212424

Like? Yes (1) | No   

Sukanya   10 years AGO

every digit is doubled.

Like? Yes (1) | No   

pallavi doddapaneni   10 years AGO

8+8=16,1+1=2,6+6=12 so 16212 then 1+1=2, 6+6=12,2+2=4, 1+1=2, 2+2=4 so 212424 is the ans

Like? Yes (1) | No   

ashish kumar   10 years AGO

every digit in a number is getting double in the next.
16212 then the next no is
2 at unit place becomes= 2*2=4
1 at tens becomes= 1*2=2
2 at hundredth becomes=2*2=4
6 at thousand becomes=6*2=12
1 at ten thousand becomes=1*2=2

so the no is 212424

Like? Yes (1) | No   

Saraswathy   10 years AGO

Multiply each individual digits with "2"
12==> 1*2|2*2==> 24
24==>2*2|4*2===> 48
.
.
.
16212==> 1*2|6*2|2*2|1*2|2*2===> 212424

Like? Yes (1) | No   

Mohit Kumar Soni   10 years AGO

each number is multiplied by 2.
16212= 1*2 6*2 2*2 1*2 2*2=2 12 4 2 4= 212424

Like? Yes (1) | No   

Devendra Marghade   10 years AGO

Next number=2*each digit of previous number
12, 1*2,2*2=24
24, 2*2,4*2=48
48, 4*2,8*2=816
816, 8*2,1*2,6*2=16212
16212, 1*2,6*2,2*2,1*2,2*2= 212424

Like? Yes (1) | No   

Vaishali Dhiman   10 years AGO

in 16212
1*2=2
6*2=12
2*2=4
1*2=2
2*2=4
so the ans is 212424

Like? Yes (1) | No   

anubhav verma   10 years AGO

every digit of the previous number*2=next number

Like? Yes (1) | No   

niveditha   10 years AGO

12=1 2(by squaring each number)
2 4
24= 2 4
4. 8
Similarly 1 6 2 1 2
2 12 4 2 4

Like? Yes (1) | No   

Pallekonda Rajesh   10 years AGO

each digits multiplied by 2 gives next number
12,24= 1*2=2 and 2*2=4 so 24
24,2*2=4,4*2=8 so 48
similarly
16212,1*2=2,6*2=12,2*2=4,1*2=2,2*2=4 so 212424
so ans:212424

Like? Yes (1) | No   

muthavarapu viashanavi   10 years AGO

from the given series 12 multiply each digit with 2 so we get 24,48,816,and then 16212 similarly
for 16212 we get 212424

Like? Yes (1) | No   

Sandeep Negi   10 years AGO

every digit is doubled

Like? Yes (1) | No   

SIVA DARA   10 years AGO

Because in the sequence the last digit is repeat in the next number as a first number and next is multiply it with 2. So in the number in the sequency 16212. i.e 16 istaken from 816. and 212 is multiply 16 with 2. i.e 1*2 6*2=212.in the same fasion 16212 =212424

Like? Yes (1) | No   

Sandeep Jadala   10 years AGO

12, 24
1+1=2
2+2=4
so 12,24
24,48
2+2=4
4+4=8
so 24,48
up to so on

Like? Yes (1) | No   

vishnuvardhan   10 years AGO

12
24=1*2 2*2
48=2*2 2*4(we have to before term and multiply indivual digit by 2)
816=2*4 2*8
16212=2*8 2*1 2*6
1*2 6*2 2*2 1*2 2*2=212424

Like? Yes (1) | No   

Parveen Kumar   10 years AGO

each digit is multiply by 2

Like? Yes (1) | No   

somashekhar   10 years AGO

Double the each prev digits.
Hence #8 is the right one..

Like? Yes (1) | No   

C.Aarthi   10 years AGO

Ans :212424
each digit multiply by 2 and write for next sequence
12= 1*2,2*2=24
24=2*2,4*2=48
48=4*2,8*2=816
816=8*2,1*2,6*2=16212
16212=1*2,6*2,2*2,1*2,2*2=212424= ans

Like? Yes (1) | No   

Parthi Smith   10 years AGO

12,24(1+1 2+2),48(2+2 4+4),816(4+4 8+8),16212(8+8 1+1 6+6),212424(1+1 6+6 2+2 1+1 2+2)

Like? Yes (1) | No   

Manoji Kumar   10 years AGO

multiples of 2

Like? Yes (1) | No   

chethan   10 years AGO

multiplying individual digits by 2...

Like? Yes (1) | No   

karthik hariharan   10 years AGO

here each integers are multiply with two
16212=
=1*2=2
=6*2=12
=2*2=4
=1*2=2
=2*2=4
so answr is 212424 8th option

Like? Yes (1) | No   

ekta rani   10 years AGO

each no. multiplied by 2.
12,
1*2 2*2=24,
2*2 4*2=48,
4*2 8*2=816,
8*2 1*2 6*2=16212,
1*2 6*2 2*2 1*2 2*2=212424

Like? Yes (1) | No   

vijayakumar   10 years AGO

12

12=1(2) 2(2)=2 4=24

24=2(2) 4(2)=4 8=48

48=4(2) 8(2)=8 16=816

816=8(2) 1(2) 6(2)=16 2 12=16212

similarly
16212=1(2) 6(2) 2(2) 1(2) 2(2)=212424

ans:2122424

Like? Yes (1) | No   

siva   10 years AGO

16212*2 without adding its remainder 212424

Like? Yes (1) | No   

sethupathi.p   10 years AGO

16212+16212=212424

Like? Yes (1) | No   

pari   10 years AGO

multiply each digit by 2

Like? Yes (1) | No   

Kowshik Sarker   10 years AGO

12
24=1*2 and 2*2
48=2*2 and 4*2
816=4*2 and 8*2
16212=81*2 and 6*2
so next one will be
1621*2 and 2*2=32424.

Like? Yes (1) | No   

07 Mar 2014 Coded language

If in coded language
ABHISHEK = 51
SOHAN = 24
MUKESH = 56
Then
SURESH = ?

OPtion

1) 51
2) 56
3) 24
4) 59
5) 34
6) 63
7) 72
8) 31
9) 58
10) None of these

Solution

A(1), B(2), C(3), D(4), E(5), F(6), G(7), H(8), I(9), J(10), K(11), L(12), M(13), N(14), O(15), P(16), Q(17), R(18), S(19), T(20), U(21), V(22), W(23), X(24), Y(25) ,Z(26)
{(sum of all alphabet) - (1st and last)}
ABHISHEK = (1+2+8+9+19+8+5+11)-(1+11) = 63-12 = 51
SOHAN = (19+15+8+1+14)-(19+14) = 24
MUKESH = (13+21+11+5+19+8)-(13+8) = 56
Similarly
SURESH = (19+21+18+5+19+8)-(19+8) = 63

Correct Option: 6 Best Solution (0)

06 Mar 2014 Ratio

Ratio of surface area of a sphere and a hemi sphere is

OPtion

1) 3:4
2) 2:1
3) 1:1
4) 1:2
5) 4:1
6) 4:5
7) 5:4
8) 4:3
9) 1:4
10)None of these

Solution

Area of sphere is 4ΠR2
And that of semi sphere is 2ΠR2+ΠR2 = 3ΠR2
Hence ratio is 4ΠR2 : 3ΠR2 = 4:3

Correct Option: 8 Best Solution (23)

RAKESH   10 years AGO

4*pi*r^2/3*pi*r^2 = 4:3

Like? Yes (8) | No   

virendra dubey   10 years AGO

the surface area of sphere=4*(pi)*(r^2);
the surface area of hemi-sphere=3*pi*(r^2);
so ratio of sphere to hemi-sphere= 4:3

Like? Yes (3) | No   

Sandeep Kumar   10 years AGO

Surface area of sphere = 4(pi)r^2
Surface area of hemi sphere = 2(pi)r^2 + (pi)r^2
= 3(pi)r^2
ratio = 4:3

Like? Yes (3) | No (1)  

ASHISH MITTAL   10 years AGO

(4*pie*r^2)/(3*pie*r^2)

Like? Yes (2) | No (1)  

PAWAN   10 years AGO

surface area of sphere is 4*pi*r2
surface area of hemisphere is 3*pi*r2
4*pi*r2/3*pi*r2=4/3

Like? Yes (1) | No   

Soumya   10 years AGO

formula for surface area of a sphere=4*PI*r^2
and hemisphere=3*PI*r^2
so it remains 4:3

Like? Yes (1) | No   

rajat sharma   10 years AGO

sphere surfcace area.=4 pie*R^2
hemisphre surface area=3 pie R^2
so,4:3

Like? Yes (1) | No   

Satish Zod   10 years AGO

Surface area of sphere = 4 π r^2……………….(1)
Surface area of hemisphere = 2 π r^2 + π r^2 = 3 π r^2………………(2)
(1) / (2) = 4/3

Like? Yes (1) | No   

shivendra pratap singh   10 years AGO

volume of sphere is =4(pi)r^2
volume of hemisphere is =3(pi)r^2

4(pi)r^2/3(pi)r^2=4:3

Like? Yes (1) | No   

Snehasis   10 years AGO

Surface area of sphere : Surface area of Hemisphere

4*pie*r^2 = 3*pie*r^2

after solving,

4 :3

Therefore, option 8 is correct.

Like? Yes (1) | No   

viveka   10 years AGO

4pi r ^2:(pi r^2+2pi r^2)
4:3

Like? Yes (1) | No   

Darshan Parmar   10 years AGO

surface area of sphere is 4*pi*r2 while the surface area of the hemisphere (with base is 2*pi*r2+ pi*r2 = 3*pi*r2 thus, the ratio is 4:3

Like? Yes (1) | No   

ARJYA HALDER   10 years AGO

Let, Radius of the sphere=r
So, Surface area of sphere=4*pi*r^2.

Surface area of the hemisphere=(2*pi*r^2+pi*r^2)
=3*pi*r^2
So, Ratio will be 4:3.

Like? Yes (1) | No   

Kundan Dhande   10 years AGO

4/3

Like? Yes (1) | No   

Vivek Jain   10 years AGO

The surface area of a sphere of radius r is 4πr^2. Half of this is 2πr^2. Then curved surface area of a hemisphere is 2 π r2. But as it is not mentioned that it is curved or total ..we will assume it is total surface area hence the circular base of the hemisphere will also be included .
So total surface area of hemisphere =2π r^2 + πr^2=3πr^2
and area of sphere = 4Ï€r^2
So ratio is 4:3

Like? Yes (1) | No   

rahul   10 years AGO

surface area of sphere to hemi sphere is 4:3

Like? Yes (1) | No   

Gaurav tyagi   10 years AGO

Ar. of sphere=4*3.14*r*r
and, Ar. of Hemisphere=2*3.14*r*r + 3.14*r*r

Like? Yes (1) | No   

saiharsha   10 years AGO

(4*pi*r^2):(3*pi*r^2)

4:3

Like? Yes (1) | No   

Sourav Saha   10 years AGO

(4*pi*r^2):((2*pi*r^2)+(pi*r^2))=4:3

Like? Yes (1) | No   

Divyank Dubey   10 years AGO

area of sphere is 4*pi*r^2
and area of hemisphere is 3*pi*r^2
so ratio will be 4:3

Like? Yes (1) | No   

Venkatesh KK   10 years AGO

Area of sphere is 4(pi)(r^2)
And Area of hemi sphere is 3(pi)(r^2)
Therefore the ratio is 4:3

Like? Yes (1) | No   

AVIJIT   10 years AGO

surface area of sphere is 4*pi*r^2
total surface area of hemisphere is 3*pi*r^2
so the ratio is 4:3

Like? Yes (1) | No (1)  

Suman Saurabh   10 years AGO

surface area of sphere=4*Ï€ *r^2
surface area of hemi sphere=3*Ï€ *r^2
so ratio= 4:3

Like? Yes (2) | No (2)  

05 Mar 2014 Solve

8 sticks are available to make a rectangle. One side of the rectangle is taken along east direction whereas second side is taken along north direction. How many rectangles can be made by using these sticks. It is not compulsory to use all the sticks in a trial.

OPtion

1) 9
2) 5
3) 4
4) 3
5) 2
6) 1
7) 6
8) 7
9) 8
10) None of these

Solution

By using 4 sticks, there is 1 possibility.

By using 6 sticks, there are 2 possibilities.

First contains two sticks along north & one stick along east.
Second contains one stick along north & two sticks along east.

By using 8 sticks, there are 3 possibilities.
First contains two sticks along north & two sticks along east.
Second contains three sticks along north & one stick along east.
Third contains one stick along north & three sticks along east.

Correct Option: 7 Best Solution (0)

04 Mar 2014 Find the number

A number consists of two digits whose sum is 9. The number obtained by reversing the order of the digits of the given number exceeds the given number by 27. Find the given number.

OPtion

1) 63
2) 72
3) 54
4) 27
5) 36
6) 45
7) 18
8) 46
9) 81
10)None of these

Solution

Let the tens digit of the number be x and its units digit be y.
By the question
x+y = 9 (i)
and
y-x = 3 (ii)
On solving (i) and (ii) we get y=6 and x =3
10x+y = 10*3+6 = 36
option 5)

Correct Option: 5 Best Solution (0)

03 Mar 2014 Sequence

What is the next number of the following sequence
12, 24, 48, 816, 16212,.......

OPtion

1) 221424
2) 224421
3) 242412
4) 242221
5) 214241
6) 214422
7) 212224
8) 212424
9) 212442
10)None of these

Solution

12
12 = 1*2 2*2 = 2 4 = 24
24 = 2*2 4*2 = 4 8 = 48
48 = 4*2 8*2 = 8 16 = 816
816 = 8*2 1*2 6*2 = 16 2 12 = 16212
Similarly
16212 = 1*2 6*2 2*2 1*2 2*2 = 2 12 4 2 4 = 212424

Option 8)

Correct Option: 8 Best Solution (21)

Varunraj Reddy   10 years AGO

Given sequence
12,24,48,816,16212,.....
Multiply each digit with 2 gives next number
Take 12-->1*2 2*2-->2 4-->24
24-->2*2 4*2-->4 8-->48
48-->4*2 8*2-->8 16-->816
816-->8*2 1*2 6*2-->16 2 12-->16212
similarly,
16212-->1*2 6*2 2*2 1*2 2*2-->2 12 4 2 4-->212424
Answer is option 8)

Like? Yes (17) | No (8)  

Venkatesh KK   10 years AGO

Multiply Each digit of a number by 2 to get next number in the sequence..
i.e.,
12 => (1*2) (2*2) => 2 4
24 => (2*2) (4*2) => 4 8
48 => (4*2) (8*2) => 8 16
816 => (8*2) (1*2) (6*2) => 16 2 12

Similarly,
16212 => (1*2) (6*2) (2*2) (1*2) (2*2) => 2 12 4 2 4 (option 8)

Like? Yes (5) | No (1)  

Saidinesh   10 years AGO

1 fist number 2 is second number ..12;
1*2 first number,2*2 second number ..24;
2*2,4*2.........48;
4*2,8*2.........816;
8*2,1*2,6*2....16212;
1*2,6*2,2*2,1*2,2*2...212424

Like? Yes (3) | No (1)  

Mahalakshmi   10 years AGO

12-> 1*2 and 2*2 = 24
24-> 2*2 and 4*2 = 48
48-> 4*2 and 8*2 = 816
816->8*2 and 1*2 and 6*2 =16212
16212->1*2 & 6*2 & 2*2 & 1*2 & 2*2=212424
so ans is 8)212424

Like? Yes (3) | No (1)  

mohan lal garg   10 years AGO

look the series
12,(1*2 2*2 =24),(2*2 4*2 =48),(4*2 8*2 816),
(8*2 1*2 6*2 =16212)
so next term is =(1*2 6*2 2*2 1*2 2*2 =212424)
so ans is 212424
option 8 is correct

Like? Yes (3) | No (2)  

nazar   10 years AGO

1*2|2*2=24
2*2|4*2=48
4*2|8*2=816
8*2|1*2|6*2=16212
1*2|6*2|2*2|1*2|2*2=212424

Like? Yes (1) | No   

Sandeep Jadala   10 years AGO

12 24
1+1=2
2+2=4
24 48
2+2=4
4+4=8
48 816
4+4=8
8+8=16
so 816
816 16212
8+8=16
1+1=2
6+6=12
so 16212
in the same way
16212
1+1=2
6+6=12
2+2=4
1+1=2
2+2=4
so 212424

Like? Yes (1) | No   

shilpi   10 years AGO

double of the digits

Like? Yes (1) | No   

ASHISH MITTAL   10 years AGO

multiply each digit by 2 to get next number

Like? Yes (2) | No (1)  

viveka   10 years AGO

12. . . . 1*2,2*2. . . . .24
24. . . . 2*2,4*2. . . . .48
48. . . . 4*2,8*2. . . . .816
816. . . . 8*2,1*2,6*2. . . 16212
16212. . . . 1*2,6*2,2*2,1*2,2*2. . . 212424

so ans 212424

Like? Yes (1) | No   

Harsh Poddar   10 years AGO

double each digit of the number
12=1*2 2*2=24
24=2*2 4*2=48
likewise others follow the same pattern
so 16212
will be 212424
option 8

Like? Yes (5) | No (5)  

saurabh   10 years AGO

MULTIPLY THE NUMBERS INTO 2 AND WRITE IT DOWN

Like? Yes (3) | No (3)  

MD SOHAIL AKHTER   10 years AGO

(1*2)(2*2)=24
(2*2)(4*2)=48
(4*2)(8*2)=816
(8*2)(1*2)(6*2)=16212
(1*2)(6*2)(2*2)(1*2)(2*2)=212424

so ans is option 8

Like? Yes (1) | No (1)  

NavyaBharathi   10 years AGO

12,2 carries to the next number as first element
Like 4 carries as 48
16 carries as 16212
212 carries as 212424
Last 3 digits consists for previous one 816 as
16×2=32
Written as 212 means 2+1=3,2.
Like last 3 digits consists for number 16212 as
212×2=424
Ans is:212424

Like? Yes (1) | No (1)  

k sindhu   10 years AGO

212424

2*2=4 1*2=2 24
4*2=8 2*2=4 48
8*2=16 4*2=8 816
6*2=12 1*2=2 8*2=16 16212
2*2=4 1*2=2 2*2=4 6*2=12 1*2=2 212424

Like? Yes (1) | No (1)  

K Venkata Subba Rao   10 years AGO

observe every number 1st num 1,2,4,8,16...
every num last num 2,4,8,6,12,.next is 24 op{1,7,8}
middle number also..1,2,.next is 4 op{1 & 8}
another observation 81*2==>162
162*2==>324 //3 is written as 21 so 324 is 2124
so next will be 212424

Like? Yes (1) | No (1)  

Gourab Dutta   10 years AGO

12=1*2,2*2=24..24=2*2,4*2=48...so 1*2,6*2,2*2,1*2,2*2=212424

Like? Yes (1) | No (1)  

Ritesh Sodwani   10 years AGO

12*2=24
24*2=48
48*2=816(not to take carry 1 )
816*2=16212
16212*2=212424

Like? Yes (1) | No (2)  

AKSHAT PRASAD   10 years AGO

next term is just two times each digit of the present term.

Like? Yes (1) | No (2)  

Vivek Jain   10 years AGO

Each digit is doubled and written on its own place like
816 => 16(8*2)2(1*2)12(6*2)=>16212
Similarly,
16212 => 2(1*2)12(6*2)2(1*2)4(2*2)2(1*2)4(2*2)=212424ans

Like? Yes (1) | No (2)  

Rajat Goyal   10 years AGO

Each digit is multiplied by 2

Like? Yes (1) | No (3)  

28 Feb 2014 Coded language

If in coded language
RAHUL = 18812
SURENDRA = 19181418
VIPUL = 221612
Then
PRAVEEN = ?

OPtion

1) 161451
2) 165114
3) 161514
4) 161541
5) None of these

Solution

A(1), B(2), C(3), D(4), E(5), F(6), G(7), H(8), I(9), J(10), K(11), L(12), M(13), N(14), O(15), P(16), Q(17), R(18), S(19), T(20), U(21), V(22), W(23), X(24), Y(25), Z(26)
RAHUL = R H L = 18 8 12 = 18812 (Use alternate)
SURENDRA = S R N R = 19 18 14 18 = 19181418
VIPUL = V P L = 22 16 12
Similarly
PRAVEEN = P A E N = 16 1 5 14 = 161514

Option 3)

Correct Option: 3 Best Solution (72)

RAKESH   10 years AGO

RAHUL =R_H_L = 18812 = 18_8_12

PRAVEEN = P_A_E_N = 16_1_5_14 = 161514
3) 161514

Like? Yes (29) | No (13)  

himani sikarwar   10 years AGO

in RAHUL R=18 H=8 L=12 similarly in SURENDRA S=19 R=18 N=14 R=18 so in PRAVEEN P=16 A=1 E=5 N=14 ans is (3) 161514

Like? Yes (13) | No (6)  

Aditya Verma   10 years AGO

A(1), B(2), C(3), D(4), E(5), F(6), G(7), H(8), I(9), J(10), K(11), L(12), M(13), N(14), O(15), P(16), Q(17), R(18), S(19), T(20), U(21), V(22), W(23), X(24), Y(25), Z(26)
R(18)A(1)H(8)U(21)L(12) = R(18)H(8)L(12) = 18812
similarly
S(19)U(21)R(18)E(5)N(14)D(4)R(18)A(1) = S(19)R(18)N(14)R(18) = 19181418
and
V(22)I(9)P(16)U(21)L(12) = V(22)P(16)L(12) = 221612
so
P(16)R(18)A(1)V(22)E(5)E(5)N(14) = P(16)A(1)E(5)N(14) = 161514(answer)
PRAVEEN = 161514

Like? Yes (13) | No (8)  

krishna   10 years AGO

161514.
decoded by alternative letter with appropriate number

Like? Yes (2) | No   

NAGENDRA P   10 years AGO

RAHUL=18-1-8-21-12=COMBINING POSITION OF ALTERNATE LETTERS...WE GET..18812
SURENDRA=19181418
VIPUL=221612
THEN,
PRAVEEN=161514...
SO OPTION (3)

Like? Yes (2) | No   

Rituparna Chakraborty   10 years AGO

Here RAHUL=18812
position of alphabets=
R=18,A=1,H=8,U=21
l=12.
SURENDRA=19181418
S=19,U=21,R=18,E=5,N=14,D=4,R=18,A=1
From this we can say that we take the position of first alphabet,then don't take the next position,again take the next.By this,
PRAVEEN=161514

Like? Yes (2) | No   

neeraj   10 years AGO

p=16 a=1 e=5 n=14

Like? Yes (3) | No (1)  

shilpi   10 years AGO

the alternate alphabet no

Like? Yes (2) | No (1)  

Lavankumar Reddy   10 years AGO

A=1,B=2,C=3,D=4,E=5,.....,Y=25,Z=26.
First Rahul = 18 1 8 21 12 here take alternative
Rhl = 18 8 12 = 18812
SURENDRA = 19 21 18 5 14 4 18 1= SRNR = 19 18 14 18 = 19181418
VIPUL = VPL = 22 16 12 = 221612

Simillarly

PRAVEEN = PAEN = 16 1 5 14 = 161514

Like? Yes (8) | No (7)  

Vaishali Dhiman   10 years AGO

option is 3
a=1
b=2................................y=25, z=26
so according to the question
R=18 h=8 l=12
so RAHUL=18812

S=19 R=18 N=14 R=18
so SURENDRA = 19181418

and for PRAVEEN==>
P=16 A=1 E=5 N=14
code for PRAVEEN is= 161514

Like? Yes (1) | No   

Nehal Chourey   10 years AGO

because the values of P=16, A=1, E=5,N=14

Like? Yes (2) | No (1)  

Anugya Sharma   10 years AGO

R A H U L
18_ 8 _ 12 (Skipping the even places, ie. skip A & U)
R=18
H=8
L=12

Similarly,
SURENDRA=19181418
S=19
R=18
N=14
R=18
THUS PRAVEEN=161514

Like? Yes (2) | No (1)  

viveka   10 years AGO

r 1b. h 8 l 12
s 19 r18 n14 r18
v21 p16 l12
p 16 a 1 e 5 n 14

Like? Yes (2) | No (1)  

priya chowdary   10 years AGO

alternate letters of the word are given their numbers according to the alphabets in order i.e., a=1
b=2
----------------z=26

Like? Yes (2) | No (1)  

ranu   10 years AGO

p=16 a=1 e=5 n=14

Like? Yes (1) | No   

karthik hariharan   10 years AGO

R-18TH LETTER IN ALPHABET
A-1ST WORD (NOT INCLUDE)
H-8TH LETTER
U-21ST LETTER(NOT INCLUDE)
L-12TH LETTER
SO RAHUL=18812
SIMILARLY ,
P-16TH LETTER
R-18TH LETTER(NOT INCLUDE)
A-1ST LETTER
V-22 LETTER(NOT INCLUDE)
E-5TH LETTER
E-5TH LETTER(NOT INCLUDE)
N-14TH LETTER
SO, PRAVEEN =161514(OPTION3)

Like? Yes (4) | No (3)  

Mahalakshmi   10 years AGO

for rahul they took alternate words
r-18
h-8
l-12
so ans for rahul is 18812
similarly for PRAVEEN we take alternate words
P-16
A-1
E-5
N-14
SO ANS 161514 option 3

Like? Yes (1) | No (1)  

shamma mohammad   10 years AGO

P R A V E E N
P=16 R=18 A=1 V=22 E=5 E=5 N=14
[0] [1] [2] [3] [4] [5] [6]
Taking [0,2,4,6] indexes
We get 161514

Like? Yes (3) | No (3)  

indu   10 years AGO

letter by letter.so answer is 161514

Like? Yes (3) | No (3)  

Dinesh thatti   10 years AGO

the series is follows as
if we equal to its respective numerals we get R=18 A=1 H=8 U=21 L=12
take the alternative numerals we get the answer 18812
SURENDRA=19181418
VIPUL=221612
PRAVEEN=161514

Like? Yes (2) | No (3)  

spoorthy A   10 years AGO

in RAHUL.....R present, H present, L present......RHL decodingIs 18812....same as surendra, vipul&praveen

Like? Yes (1) | No (2)  

NavyaBharathi   10 years AGO

Alternate letters are arranged with their respective numbers
R-18,A,H-8,U,L-12 LIKE
P-16,R,A-1,V,E-5,E,N-14.

Like? Yes (2) | No (3)  

Palash    10 years AGO

RAHUL= R(18) H(8) L(12)
SURENDRA= S(19)R(18)N(14)R(18)
VIPUL=V(22)P(16)L(12)

SO , PRAVEEN =P(16)A(1)E(5)N(14) .....NO 3.

Like? Yes (2) | No (3)  

AVIJIT   10 years AGO

RAHUL=18812
R=18,A=1,H=8,U=21,L=12
coded as taking 1st,3rd,5th,so 18..8..12
like this each word is coded
so PRAVEEN= (P=16)(A=1)(E=5)(N=14)
1st 2nd 3rd 4th == 161514

Like? Yes (2) | No (3)  

srujana aitha   10 years AGO

In rahul consider odd places (r-18),(h-8),(l-12)
similary in vipul (v-22),(p-16),(l-12)
so in Praveen (p-16),(a-1),(e-5),(n-14)

Like? Yes (2) | No (3)  

R.RAVIKUMAR   10 years AGO

A-1.B-2,....,Z-26
By taking equivalent number of the alternating letters..
P-16
A-1
E-5
N-14

Like? Yes (2) | No (3)  

muthavarapu viashanavi   10 years AGO

the word RAHUL is coated as its eqivalent number by droping alternative letters means R=18,A=1,H=8,U=21,L=12 by leaving A&U it is coated as 18812 so similarly for PRAVEEN ,P=16,A=1,E=5,N=14 so the answer is 161514

Like? Yes (3) | No (4)  

sowmya   10 years AGO

alternate p=16,a=1,e=5,n=14
so ans is 161514

Like? Yes (2) | No (3)  

Murugan D   10 years AGO

answer is 3
Rahul=18+1+8+21+12 one to one number is elminate from the series and form all the numbers. so the answer is Praveen=16+18+1+22+5+5+14=161514

Like? Yes (2) | No (4)  

nazar   10 years AGO

RAHUL--R-18,H-8,L-12(WE NEED TO TAKE ONLY EVEN WORDS ALPHABETICAL NUMBERS)
LIKE THAT
PRAVEEN--P-16,A-1,E-5,N-14
SO ANSWER IS 161514

Like? Yes (2) | No (4)  

Snehasis   10 years AGO

First find the alphabet numbers:
R(18) A(1) H(8) U(21) L(12)
Now, take the alternative numbers of alternate alphabets then,
R = 18, H = 8, L = 12
therefore, RAHUL = 18812

Similarly,
SURENDRA = S(19) U(21) R(18) E(5) N(14) D(4) R(18) A(1)
now take alternative alphabets numbers,
S = 19, R = 18, N = 14, R = 18
then,SURENDRA = 19181418

Therefore same way we have to follow for PRAVEEN,
P(16) R(18) A(1) V(22) E(5) E(5) N(14)
taking again the alternative series of numbers,
P = 16, A = 1, E = 5, N = 14

therefore, PRAVEEN = 161514

The required answer is option 3.

Like? Yes (2) | No (4)  

ITHA Naresh Babu   10 years AGO

alternate alpha numbers

Like? Yes (1) | No (3)  

Varunraj Reddy   10 years AGO

RAHUL=18812
R=18 H=8 L=12
ie.,Alphabet number in odd places
similarly,
PRAVEEN=
P=16 A=1 E=5 N=14
ie.,161514 option 3.

Like? Yes (2) | No (4)  

basha shaik   10 years AGO

Praveen is coded as 161514

Like? Yes (2) | No (4)  

ayush   10 years AGO

rahul: 18,1,8,21,12 we take alternate codes only so 18,8,12
surendra: 19,21,18,5,14,4,18,1 we take alternate codes only so 19,18,14,18
so praveen: 16,18,1,22,5,5,14

so alternate code is 16,1,5,14

ans is 161514

Like? Yes (1) | No (3)  

DIVYA THANGAVEL   10 years AGO

PR-16;A-1;EE-5;N-14;POSITION OF ALPHABET A-1;B-2........Z-26;COMBINING OF TWO ALPHBET
P POSITION - 16;
A-1
N-14
E-5

Like? Yes (1) | No (3)  

chan   10 years AGO

write the position of each alphabt and write only odd position.
like
rahul-18812
r-18
h-8
l-12

Like? Yes (1) | No (3)  

SIBNATH HALDER   10 years AGO

position of ENGLISH alphabet order A to Z(1 TO 26)
1-RAHUL=18+1+8+21+12
ans will 1st position then 3rd position and 5th position so ANS is18812,
2-SURENDRA=19+21+18+5+14+4+18+1
similarly 1st position then 3rd position 5th position then 7th position
so ans is-19181418,
3-VIPUL=22+9+16+21+12
similarly 1st position then 3rd position then 5th position so ans is-221612
finally
PRAVEEN=16+18+1+22+5+5+14
1ST position then 3rd position 5th position 7th position
ans is 161514

Like? Yes (1) | No (3)  

PRAGATHEESWARAN.S   10 years AGO

assume a=1, b=2,.....
in praveen, take alternative letters alone...
i.e., p a e n.....
compare these with numericals as given above.
so, p a e n = 16 1 5 14 => 161514...
3 is ans.....

Like? Yes (1) | No (3)  

DIVYA MURUGESH   10 years AGO

PRAVEEN
pick the letter by leaving 1 letter
for ex take PAEN and corresponding number in 24 letter
p=16 A=1 E=5 N=14
161514

Like? Yes (1) | No (3)  

Ritesh Sodwani   10 years AGO

numbers of alternate characters
RAHUL=18812
R=18
H=8
L=12
VIPUL=221612
V=22
P=16
L=12
PRAVEEN
P=16
A=1
E=5
N=14

Like? Yes (2) | No (4)  

Komala.G   10 years AGO

Option (3)
A(1),B(2),C(3) ...........Z(26)
Consider the value of letter jumping of the letters preceding by
RAHUL = 18 1 8 21 12 = 18812(RHL)
SURENDRA = 19 21 18 5 14 4 18 1= 19181418(SRNR)
VIPUL 22 9 16 21 12 = 221612 (VPL)
SIMILARLY
PRAVEEN = 16 18 1 22 5 5 14 = 161514 (PAEN)

Like? Yes (1) | No (3)  

Sukanya   10 years AGO

the alphabet position for 1st 3rd 5th & 7th values are given

Like? Yes (1) | No (3)  

Yekollu Muneeswar   10 years AGO

Every even position letter is not coding...

RAHUL----> R(18) H(8) L(12)--->18 8 12
SURENDRA---->S R N R-->19 18 14 18
VIPUL----> V P L--> 22 16 12
Therefore......

PRAVEEN---> P A E N -->16 1 5 14

Like? Yes (1) | No (3)  

M.Ramya Sree   10 years AGO

jst seen the logic

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rudramadevi   10 years AGO

r a h u l=18 8 12, s u r e n d r a= 19 18 1 4 18
18 1 8 21 12 19 21 18 5 14 18 1
choose alternative digits then
parveen= 16 18 1 22 5 5 14
16 1 5 14

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Rajasekhar Reddy   10 years AGO

A-1,B-2,...............,z-26
PRAVEEN = PAEN = 161514

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janardhan babu   10 years AGO

p-16
a-1
e-5
n-14

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kiran kumar reddy yanamala   10 years AGO

odd positions of letters

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VIKASH RAY   10 years AGO

In, the above given question even term numbers are absent.
so, in Praveen the answer is obtain by writting only the position of (p,a,e,n) i.e.
161514.

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Hemalatha   10 years AGO

considering only alternate words like P,A,E,N and numbering as p(16)a(1)E(5)n(15)

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soundar   10 years AGO

odd number values of alphabet

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Tarun Sai   10 years AGO

Option - 3
After Giving Corresponding Numbers to Alphabets,
Alternate letters of the Word Are Coded
R A H U L = 18 1 8 21 12 ====> R H L = 18 8 12
Similarly
S R N R = 19 18 14 18
V P L = 22 16 12
For PRAVEEN Picking alternate Letters We get
P A E N = 16 1 5 14(Option 3)

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steepan murugesan   10 years AGO

code the place number of alphabets ...you should code odd place number of given words like in rahul
r-18
h-8
l-12 as we get 18812 similarly for praveen is 161514 which is in option 3

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S.Roohi Fathima   10 years AGO

it is calculated with position of letters in alphabetical order. and alternate letters are taken.
P=16 A=1 E=5 N=14

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Udhaya kumar   10 years AGO

a=1 , b=2...... z=26 respectively..
corresponding values for odd alphabets are the answer........

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asgar hussain   10 years AGO

rahul is wrtten as
r=18
h=8
l=12
similarly
p=16
a =1
e=5
n=14

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Sajal Garg   10 years AGO

Answer = 4) 16 1 5 14
A(1),B(2),C(3),D(4),E(5),F(6),G(7),H(8),I(9),J(10),K(11),L(12),M(13),N(14),O(15),P(16),Q(17),R(18),S(19),T(20),U(21),V(22),W(23),X(24),Y(25),Z(26)
->RAHUL = 18 1 8 21 12 = just take odd character( 1st,3rd,5th,7th...)and concatenate them = 18 8 12
->SURENDRA = taking odd character = S R N R = 19 18 14 18
same way, VIPUL= 22 16 12
& PRAVEEN=P A E N = 16 1 5 14 = "161514"
option (3)

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julee verma   10 years AGO

position value of alternate letter is present in this coded language.
RAHUL=R=18,H=8,L=12=18812
SURENDRA=S=19,R=18,N=14,R=18=19181418
VIPUL=V=22,P=16,L=12
HENCE PRAVEEN=161514

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aviral bhargava   10 years AGO

in this question we are taking the alternate positional values for forming the integer related with a given word
For eg,:-
RAHUL=18,1,8,21,12
Selecting R,H and L
we get the integer as 18812.
Similarly PRAVEEN =16,18,1,22,5,5,14
Selecting P,A,E,N
we get the integer value as ,
=161514
Hence the option 3 is correct.

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K Venkata Subba Rao   10 years AGO

numbers of odd chars

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KRISHNAN   10 years AGO

Putting A TO Z AS 1-26
The code is the number for the odd places alpbhabets

SO RAHUL= RHL= 18812
SURENDRA= SRNR=19181418
VIPUL=VPL= 221612
THUS PRAVEEN= PAEN= 161514 so option 3 is the correct answer

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S.SHAFI   10 years AGO

Give numbers to alphabets like A=1,B=2...
The value of alphabets at odd places.
RAHUL = 18 8 12 [ R H L] VALUES
VIPUL = 22 16 12 [ V P L] VALUES
PRAVEEN = 16 1 5 14 [ P A E N] VALUES

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ASHISH MITTAL   10 years AGO

give the number a-1,b-2,c-3,d-4.....z-26
in given word only take the number of alternate word , so for praveen we get no for paen which is
161514

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khushboo   10 years AGO

RAHUL=18812
FIRSTLY TAKE R POSITION =18
THEN LEAVE A POSITION
NOW TAKE H=8
THEN LEAVE U
NOW TAKE L=12
RAHUL=18812
SO PRAVEEN
P POSITION =16
LEAVE R
TAKE A POSITION=1
LEAVE V
TAKE E POSITION=5
LEAVE E
TAKE N POSITION=14
NOW SOLUTION IS =161514

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anubhav verma   10 years AGO

161514 altenate alphabet number

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Suyog   10 years AGO

In RAHUL =18 1 8 21 12
In alternate it is 18812
SURENDRA = 19181418
VIPUL = 221612
as same PRAVEEN= 16 18 1 22 5 5 14
In alternate
PRAVEEN= 161514 So it is the ans

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YUVAN SATHAIAH   10 years AGO

PRAVEEN=P(16)A(1)E(5)N(14)
=161514

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ESKILLA SATHISH   10 years AGO

here they have taken numerical code for alternative alphabts

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jayabharathy   10 years AGO

a=1,b=2,c=3,.....z=26
just write the numbers of alternate letters from starting letter
R A H U L
18 8 12 so that 18812

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Prashasti Sharma   10 years AGO

just considering odd position
Rahul=(R=18, h=8,l=12)=18812
Surendra=(s=19,r=18,n=14,r=18)=19181418
vipul=(v=22, p=16,l=12)=221612
Praveen=(p=16,a=1,e=5,n=14)=161514

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SONU GUPTA   10 years AGO

ans will be 161514

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