Users Discussion Board

Bhargavi 9 years ago

what is the solution to this problem
a b c are non zero real numbers such that ab/(a+b = 3 bc/(b+c)=4 and ca/(c+a)=5 if abc/(ab+bc+ca)=m/n where m and n are relatively prime positive integers find m+n

Reply Like? Yes (2) | No

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Prashant 9 years ago

a car travel 50% faster then bike both starts at the same time a to b . the car reach 25 minutes earlier then bike . if the distance between a to b is 100 km find speed.
A.120 B 100 c 80 d 75

Reply Like? Yes (2) | No

Devendra Marghade 9 years ago

Speed(in kmph) of bike=80 , car=120

If speed of bike=x, then speed of a car=1.5x
According to given condition: (100/b) - (100/1.5b) =25/60
On solving, b=80, so speed of a car=1.5*80=120

Like? Yes (1) | No

Gayatri Nillawar 9 years ago

plzzzz send latest cocubes placement papers for capgemini at nillawargg@gmail.com

Reply Like? Yes (2) | No

Gayatri Nillawar 9 years ago

plzzzz send latest cocubes placement papers for capgemini at nillawargg@gmail.com

Reply Like? Yes (1) | No

Karthika 9 years ago

TCS feb 2016 result got published. Finally i got selected feeling happy and great. All credits goes to M4maths. and thank u all for ur apps support. And also i received call letter very soooon thank godddd

Reply Like? Yes (7) | No

ashok felix 9 years ago

yes ...! i also got placed in TCS . which stream in u are..?

Like? Yes (2) | No (1)

Karthika 9 years ago

Reply Like? Yes (3) | No

Smita kumari 9 years ago

Karthika can u plz tell me how u have prepare for tcs.

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annapurna bhosale 9 years ago

A circular road runs around a circular garden. If the sum of the circumferences of the inner and outer circles is 88 metres and the radius of the inner circle is one-third of the outer circle, then the width of the road is :

A. 4 metres
B. 5 metres
C. 6 metres
D. 7 metres

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

D. 7 meters

If the radius of smaller circle=r then radius of bigger circle=3r
Given Sum of the circumferences=2*Pi*r + 2*Pi*3r=88, r=88/(8*Pi)=7/2, So 3r=21/2
Width of the road=Outer radius - Inner radius= (21/2) - (7/2)=7

Like? Yes (2) | No

Arijit 9 years ago

Permutation & Combination : How many ways can you order the letters from the word TREES if:
It begins with exactly one E?

Reply Like? Yes (1) | No

tejaswani k 9 years ago

Ashok brought a gift article and spent Rs. 110 on its repair. He then sold it to Bhushan at a profit of 20%. Bhushan sold it to Charan at a loss of 10%, and Charan sold the same for Rs. 188 at a profit of 10%. How much did Ashok pay for the article?

Reply Like? Yes (1) | No

tejaswani k 9 years ago

What is the length of a cylindrical wire of radius 3 mm that can be drawn from a copper sphere of radius 21 cm?

Reply Like? Yes (1) | No

tejaswani k 9 years ago

A girl wants to buy a bag. She decided to save her pocket money to buy it. On the first day, she saves Rs. 10, and on every subsequent day, she saves Rs. 10 more than the money she has saved on the previous day. On which day would the girl be able to save Rs. 1200 for her bag?

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

15 th day

Saving of a girl will be 10,20,30,40, ......... to sum up 1200 Rs.
As this forms an arithmetic series with first term a=10, difference d=10
Sum of an arithmetic series=(n/2)[2*a+(n-1)d]=1200 or (n/2)[2*10 + (n-1)*10]=1200
On simplifying , n^2+n-240=0 , (n-15)(n+16)=0, so n=15

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surya to Aradhana kumari 9 years ago

hi,aradhana how r u..

Reply Like? Yes (2) | No

BHUVANESHWARI to puppy 9 years ago

can u plz send me the Tech Mahindra placement papers---- bhuvanatomail@gmail.com

Reply Like? Yes (1) | No

sivaleela to puppy 9 years ago

I want to the Tech Mahendra placement paperas.Please send to my mail id:sivaleela.katiki@gmail.com.
Thanks in advance.

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sivaleela to puppy 9 years ago

I want to the Tech Mahendra placement paperas.Please send to my mail id:sivaleela.katiki@gmail.com.
Thanks in advance.

Reply Like? Yes (1) | No

nirmala 9 years ago

What is the maximum value of x3y3 + 3 x*y when x+y = 8?

Reply Like? Yes (1) | No

bharti 9 years ago

What is remainder when 50^51^52 divided by 11

Reply Like? Yes (2) | No

ravindra kumar 9 years ago

. Amit present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. What is the present age of the mother

Reply Like? Yes (2) | No

Devendra Marghade 9 years ago

40 years

If present age of Amit=A & Mother=M, then
A=2M/5 or 5A=2M ---(i) and
A+8=(M+8)/2 or 2A+16=M+8, 2A-M=-8 ---(ii)
On solving (i) & (ii), A=16, M=40

Like? Yes (1) | No

sridivya 9 years ago

can any one spell cow in 12 letters

Reply Like? Yes (1) | No

Dileep 9 years ago

HI... I ATTENDED FOR IGATE OFFCAMPUS AND I HAVE SHORTLISTED AND COMPLETED MY CERTIFICATE VERIFICATION BUT I DIDNOT GET CALL LETTER....
AND SOME OF MY FRNDS GOT CALL LETTER YESTURDAY...
IS THEIR ANY CHANCE OF REJECTION AFTER SELECTED IN OFF CAMPUS... ??????

Reply Like? Yes (1) | No

Pavaman Dabeer 9 years ago

B A N A N A + G U A V A = O R A N G E

then
what is the value of ORANGE

Reply Like? Yes (2) | No

sujauddin khan 9 years ago

Find the no. Of digits in the square root of 3548346624

Reply Like? Yes (1) | No

Rishu 9 years ago

5

half the number of digits in 3548346624

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sujauddin khan 9 years ago

X²+y²+z²+7/2=x-2z-3y.....find the value of 2x-4y+3z

Reply Like? Yes (1) | No

Anitha Kumar 9 years ago

Recently,i cleared CTS interview.All credits goes to M4MAths Team....because i only followed this site,which is very helpful &provides easy ways to solve app ques..,once again thanku pals... and i suggest all my frnds to follow this site....

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m.raviteja 9 years ago

2 men started journey in same direction . they travel at 9 km and 15km/day daily.after travelling for 6 days the man travelling 9 lm/day doules his speed and both of them the distance in same time. fid the no. of days taken by them to reach destination

Reply Like? Yes (1) | No

m.raviteja 9 years ago

an article is sold at loss of 10% . had he sold it for rs.9 more he would have gain of % on it. the costprice of article is

Reply Like? Yes (1) | No (1)

Anurag Singh 9 years ago

hello frnds m4apptitude site is pepare for any exam

Reply Like? Yes (1) | No

rahul singh 9 years ago

A shopkeeper is giving 6 kg of rice at the price of 5 kg. What should be the mark-up on cost price if he wants to make a profit of 20%?

Reply Like? Yes (1) | No

Rishu 9 years ago

Rs 4.167/kg or Rs 25 for kg

let cp=x
x+0.2x=5
x=5/1.2=4.167

Like? Yes (1) | No (1)

RAMESH 9 years ago

The cost price of a book increases by Rs 35. While the selling price increases by 25% and the profit decreases from 20% to 15%. Find new selling price of that book

Reply Like? Yes (2) | No

swati 9 years ago

155.22
Formula-profit%=profit/c.p*100

Like? Yes (1) | No (1)

Rishu 9 years ago

ans is Rs 172.5

let CP=x, SP=y
y-x=0.2x or y-1.2x=0.....(1)
(y+0.25y)-(x+35)=0.15(x+35) or 1.25y-1.15x=40.25.....(2)
solving (1)&(2) we get:
x=115, y=138
thus old selling price of the book is Rs 138
new selling price of the book=138+0.25*138=Rs 172.5

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Anbarasu 9 years ago

We have Rs.100 We should buy 100 things at Rs.5, Rs.0.5 paise, Rs.0.25 pause,how can buy?

Reply Like? Yes (1) | No

Ravirajkumar to RAHUL SINGH 9 years ago

Hi bro.. i want to talk about elitmus for 5 minute.. can you give me your number..or message to my mobile number 7204583984 or my mail id:rrpatil117@gmail.com

Reply Like? Yes (1) | No

Shana Hermiya 9 years ago

TCS TN zone off campus HR round result declared

Reply Like? Yes (1) | No

kashif 9 years ago

How can you make a square from two triangles?

Reply Like? Yes (1) | No

Rishu 9 years ago

take two isosceles right angled triangles and align them diagonally

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chandana 9 years ago

1. A team won 80% of the games it played.it played 5 more games of which 3 won and 2 lost,it loss percentage changes to 25%.how many did it play overall

Reply Like? Yes (1) | No

chandana 9 years ago

answer this question plz

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Devendra Marghade 9 years ago

20 games

If games initially played=x, then games won=0.8x, lost=0.2x
With 5 more games, total won=0.8x+3 , lost=0.2x+2
As now lost % is 25 of the overall, so 100*(0.2x+2)/(x+5)= 25, x=15
So overall games played= 15+5=20

Like? Yes (4) | No

kiranraj 9 years ago

A builder engaged 20 men to build a house in 30 days. after 26 days he engaged 10 more men in order to finish the work in time. if he had not engaged these additional men how many days it would have taken to complete the work?

Reply Like? Yes (1) | No

Rishu 9 years ago

ans is 32 days

let 1 man takes x days to finish the work
then work done by 1 man in 1 day=1/x
work done by 20 men in 26 days=(20*26)/x=520/x
work done by (20+10)=30 men in 4 days=(30*4)/x=120/x

520/x+120/x=1
x=640

so 1 man can complete the work in 640 days
therefore 20 men will take 640/20=32 days to complete the work

Like? Yes (2) | No

Dibyashree 9 years ago

please someone tell me if the result of jan 17th elitmus is out yet.....

Reply Like? Yes (2) | No

Rishu 9 years ago

mine came out before 21st jan

Like? Yes (1) | No

sathish 9 years ago

A tree of height 36mts at the edge of a road broke at certain height and it fell in such a way that its top touched the other edge of the road.If the breadth of the road is 12m,the the height at tree broke is ?
a)16 b)24 c)12 d)18

Reply Like? Yes (1) | No

kumar ajeet 9 years ago

7. A contractor agreed to finish a piece of work in 150 days. He employed 75 men and made them work for 8 hours per day. However, after 90 days, he realized that only 2/7th of the work was completed. How many more men would he need to employ to complete the work on time if he intended to make everybody work for 10 hours per day henceforth?

Reply Like? Yes (2) | No

Rishu 9 years ago

let 1 man takes x hours to complete the given piece of work
then, work done by 1 man in 1 hour=1/x
work done by 75 such men in (8*90) hours=2/7
or (1/x)*75*8*90=2/7
or x=18900
now let y such men can complete the remaining work in 60 days working 10 hours a day
(y*10*60)/x=1-2/7
or (y*10*60)/18900=5/7
or y=225
number of additional men required=(225-75)=150 men

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Himanshu 9 years ago

The average age of 11 players of a cricket team is increased by 2 months when two of them aged 18 years and 20 years are replaced by two new players.Find the average age of new players?

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Rishu 9 years ago

19yrs 11months

let average age of 11 players be x yrs and age of two new players be a & b yrs.
(11x-18-20+a+b)/11=x+2/12
11x-38+a+b=11x+11/6
a+b=11/6+38=239/6
(a+b)/2=239/12=19yrs 11months

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Yashi Das 9 years ago

Two players of age 18 yr & 20 yr is replaced i.e. total 38 year age is replaced. Total average age is increased by 2 months & so total age increased of two men is 11× 2 =
22 months. So now total of both person = 38 yr 22 months
Hence their average = 19 yr 11 months

Like? Yes (1) | No

Kranthi to preetysinha 9 years ago

Hiii preeti will u please tell.... me about how i clear the return test fot TCS

Reply Like? Yes (1) | No

Gudukandula shiva to Sana Khanum 9 years ago

Hi, did you applied for TCS??

Reply Like? Yes (2) | No

ABHIRUCHI SHARMA 9 years ago

A mixture of a certain quantity of milk with 16 litres of water is worth 90 P per litre .If pure milk be worth Rs. 1.08 per litre how much milk is there in the mixture?

Reply Like? Yes (1) | No

Gudukandula shiva 9 years ago

What is the ans abhiruchi.

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Rishu 9 years ago

80 litre

cost of 1 litre of pure milk=Rs 1.08
cost of 1 ml of pure milk=Rs 1.08/1000
(1.08/1000)*x=0.9
x=2500/3
so 2500/3 ml of pure milk costs 90 P
also there is 500/3 ml of water in 1 litre of mixture
when water is 500/3 ml milk is 2500/3 ml
so when water is 16 litre milk is ((2500/3)/(500/3))*16=80 litre

Like? Yes (1) | No

Arun Kunwar 9 years ago

please tell me what to prepare for TCS written exam??

Reply Like? Yes (1) | No

Gudukandula shiva to pooja kumari 9 years ago

Hi pooja
Are you placed in TCS??

Reply Like? Yes (1) | No

Shubhi Asati 9 years ago

Tthe first 44integers are written in order to form the larger no. x= 123456789........424344.what is the remainder when x is divided by 45

Reply Like? Yes (2) | No

Rishu 9 years ago

ans is 9

45=9*5
a number is divisible by 9 if its digital sum is divisible by 9
and a number is divisible by 5 if it ends with 0 or 5

1+2+3+.....+44=44(44+1)/2=990
9+9+0=18
1+8=9 which is divisible by 9

so x is divisible by 9

last digit of x/9 is 6 (since 9*6=54 or when 9 is multiplied by any number ending with 6, their product ends with 4)

when 6 is divided by 5 remainder is 1

so when x is divided by 45 the remainder is 1*9=9

this method works u can verify it by taking any other number which is divisible by 9 but not 5
eg: 423513/45
the last digit of 423513/9 is 7
when 7 is divided by 5 the remainder is 2
so when 423513 is divided by 45 the remainder is 2*9=18

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sgfsgfsg to sahithya 9 years ago

sahitya CAN u please tell me how was the paper????

Reply Like? Yes (1) | No

Mayur 9 years ago

a rectangular plot has a concrete path running in the middle of the plot parallel to the breadth of the plot. the rest of the plot is used as a lawn which has an area 240 sq. m. if the width of the path is 3m and the length of path is greater than its breadth by 2m what is the area of the rectangular plot?

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

255 sq. m.
Area of the rectangular plot=Area of the lawn + Area of concrete path=240+ 3*(3+2)=255

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Narasimha Naidu 9 years ago

Find the missing number 32, 52, 74, 112, 135 ……………

Reply Like? Yes (2) | No

sachin dhawan 9 years ago

If AM=3, ARE=4, and NEVER=8, then
“INDIA IS A GREAT NATION” =:

Reply Like? Yes (1) | No

neha gupta 9 years ago

AM=1 13=total digits= 3
ARE=1 18 5=total digits= 4
NEVER= 14522518= total digits= 8
INDIA IS A GREAT NATION= 914491920171851211412191514
Total Digits= 27
so answer is 27

Like? Yes (3) | No

Sathish 9 years ago

This app is super

Reply Like? Yes (1) | No

Gangadhar Jha 9 years ago

53,74,123,100,145,x.
What will be x

Reply Like? Yes (2) | No

Rishu 9 years ago

x=78

53*1=53
37*2=(53-16)*2=74
41*3=(37+4)*3=123
25*4=(41-16)*4=100
29*5=(25+4)*5=145
13*6=(29-16)*6=78

Like? Yes (2) | No

m.raviteja 9 years ago

in bankofficer selection exam 70% of successful students qualified in efficiency test and 65% in interview. if 27% were unsucessful in both exams,then how many students were sucessful in written exam

Reply Like? Yes (10) | No

neha gupta 9 years ago

Use Venn Diagram to solve this question.
If 27% were unsuccessful in both the exams this means 73% were successful.
then let x% be successful in both the exams
equation can be:
70 - x + x + 65 - x = 73
solving it we get , x = 62
thus 62% qualify both exams
so 70 - 62 = 8% students qualified only written exam and not interview.

Like? Yes (8) | No (1)

m.raviteja 9 years ago

2 pipes can fill tank in 6 and 8 minutes. if those 2 taps are opened one by one for one minute each then how long it will tank for tank to fillup

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

6 min. 45 sec.

In 2 min. tank will be filled (1/6)+(1/8)=7/24
So upto 6 min. filling =3*7/24=21/24=7/8, remaining=1/8
Again first pipe will fill remaining in (1/8)/(1/6)=3/4 min=45 sec.
So total time taken=6 min. & 45 sec.

Like? Yes (3) | No

soujanya 9 years ago

Asha and nisha are two sisters who intend to meet their aunt who is 25 km away from them. Asha leaves home at 9am and walks at a spped of 4km/hr. while Nisha leaves at 11:30am on a bicycle at a speed of 9kmph. when does nisha meet asha?

pls solve dis prblm i need complete solution

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

1:30 pm

Considering Asha and Nisha starts from same point in the same direction but at different times.
Starting at 9:00 am ,distance covered by Asha upto 11:30 am @ 4 km/hr=2.5*4=10 km.
At 11:300 Nisha started @ 9 km/hr, to meet Asha she has to cover the difference of 10 km. with relative speed of 9-4=5 km/hr, so after 10/5=2 hr. at 11:30+2=1:30 pm both will meet.

Like? Yes (1) | No

honey 9 years ago

for the igate exam how we need to prepare

Reply Like? Yes (1) | No

honey 9 years ago

11. Select the option from below which best matches the statement mentioned below logically.
If you apply the formula, you can get your solution.

A. If you don’t use the formula you will not get your solution.
B. Using the formula is mandatory to get the solution.
C. If you have solved the problem, you have used the formula.
D. None of the above

Reply Like? Yes (1) | No

neha gupta 9 years ago

Correct answer is A

Like? Yes (1) | No

honey 9 years ago

10. Select the option from below which best matches the statement mentioned below logically.
If you have a suitcase with you, you are off to the railway station?
A. If you don’t have a suitcase with you, you are not heading towards the railway station.
B. If you have a bag with you then you are not off to the railway station.
C. If you are not heading towards a railway station you do not have a suitcase with you.
D. None of the above
can any one slove this problem and answer me

Reply Like? Yes (1) | No

neha gupta 9 years ago

For answering these types of question we follow complementary techniques.
Its correct answer is A.

Like? Yes (1) | No

susmita seal 9 years ago

please anyone tell me for TCS pool campusing doing m4maths is enough?please help..please..please..

Reply Like? Yes (1) | No

menaka 9 years ago

m^4+m^-4=47 then m^1+m^-1=?

Reply Like? Yes (2) | No

Devendra Marghade 9 years ago

3

m^4+(1/m^4)=47
m^1+m^-1=m+(1/m) , If m+(1/m) =x, then
[m+(1/m)]^2=x^2 , m^2+2+(1/m^2) =x^2 or m^2+(1/m^2)=x^2 - 2
Again [m^2 +(1/m^2)]^2=(x^2 -2)^2
m^4+2+(1/m^4) =x^4- 4x^2 +4
Given m^4+2+(1/m^4)=47, So x^4 -4x^2+4=47 or x^4 - 4x^2 - 45=0
Substituting x^2=a, to get quadratic equation, a^2- 4a -45=0 or (a+5)(a-9)=0, a=9
As x^2=a=9, x=3

Like? Yes (2) | No

Rishu 9 years ago

x=3,-3

Like? Yes (1) | No

chandu 9 years ago

region 1999 2000 2001 2002 2003 2004
africa 26 27 28 29 31 33

america 122 128 120 115 113 126
asia 103 115 121 131 120 153
europe 381 393 391 400 396 415

middle east 21 24 24 28 30 36

During the period 1999-2004 from which region has the % growth of arrivals been highest?
During the period 1999-2004 from which region has the % growth of arrivals been lowest?
During the period 1999-2004 from which region has the growth of arrivals been highest?
in which year has the number of arrivals from all the regions the lowest?
in which year has the increase in total number of arrivals from all the regions the lowest?

plzzzzz solve this...who r experts

Reply Like? Yes (2) | No

chandu 9 years ago

Please solve this...

Like? Yes (1) | No

Sunny 9 years ago

If a number is to 7/9 of 35% of 900

Reply Like? Yes (1) | No

vidya 9 years ago

x=7/9 * 35/100 * 900
245?

Like? Yes (1) | No

ABHIRUCHI SHARMA 9 years ago

A man buys milk at 50 P. a litre and after adding water sells at 60 P. a litre thereby making a profit of 100/3 p.c.Find the proportion of water he has added.

Reply Like? Yes (1) | No

Rishu 9 years ago

ans=1/9

let while selling x ml of milk is present in 1 litre of milk water solution
then, SP of x ml milk=60 P
CP of x ml of milk=(50/1000)x=x/20 P

(60-x/20)/(x/20)=1/3
1200/x=4/3
x=900

so 900 ml milk is present in 1 litre of milk and water solution
therefore 100 ml of water is there in solution

water:milk=1/9

Like? Yes (2) | No (1)

ABHIRUCHI SHARMA 9 years ago

The answer given is 1:0.

Like? Yes (1) | No

Rahul Pandey 9 years ago

guyzz plz help me...
i got 85% in problem solving
70% in english
and 43% in quant
how to calculate total percentile and what are my chances????

Reply Like? Yes (1) | No

shahanaz 9 years ago

can anyone send TCS placement paper to this mail Id:
shahanaz375@gmail.com

Reply Like? Yes (1) | No

Behara Avinash 9 years ago

Anyone please daily update the TCS previous questions with solutions and puzzles also mainly e-mail attic ates also.
my mail id b.avinash777@gmail.com

Reply Like? Yes (1) | No

dharambir bharti to sundar 9 years ago

hey bro can you please tell me the questions that were asked in TCS drive. PLZZZ mail me at.. veerbharti81@gmail.com

Reply Like? Yes (2) | No

saragadam indira to kriti kankariya 9 years ago

hi sis....... i think you are selected in sap interview. Am i right?

Reply Like? Yes (6) | No

saragadam indira 9 years ago

hi....sister.......

Like? Yes (1) | No (1)

Kalaivanan 9 years ago

Find out wrong one: 2,3,12,36,86,167

Reply Like? Yes (1) | No

saidurgacharan 9 years ago

my amcat score is btwn 35 to 40 but i got 74.1 % in programming do i get call letters from companies?

Reply Like? Yes (1) | No

Shikha 9 years ago

do anybody know which company is coming in Piet on 3rd Feb 2016

Reply Like? Yes (1) | No

Nagajothi k 9 years ago

5 xor 3 =34 and 6 xor 2 =40 then, the value of 7xor 1=?
a) 54 b)43 c)50 d)30

Ans: ?

Reply Like? Yes (1) | No

Kalaivanan 9 years ago

Ans=50
5^2+3^2=34
6^2+2^2=40
7^2+1^2=50

Like? Yes (2) | No

kalluri jyotsna to puppy 9 years ago

josh.prince117@gmail.com
i want techmahindra placement papers

Reply Like? Yes (1) | No

meenakshi 9 years ago

How much cutoff in Tcs written exam?

Reply Like? Yes (1) | No

sukriti singh 9 years ago

If a dealer gets x% on rs4000 and y% on remaining. If he gets commission of rs1270 on rs13000 and rs 830 on rs 9000. Find x%

Reply Like? Yes (1) | No

Devendra Marghade 9 years ago

x=7

Commission on 13000=(4000*x/100) + (13000-4000)*y/100=1270 or 4x+9y=127 ---(i) &
Commission on 9000= (4000*x/100) + (9000-4000)*y/100 =830 or 4x+5y=83 ---(ii)
On solving (i) & (ii), x=7, y=11

Like? Yes (1) | No

MRINAL MOHAN 9 years ago

16. A recent newspaper feature story listed several factors, as predictors of likelihood of premature death .Two of these factors were a sedentary life style without regular physical exercise, and sleeping more than 12 hours daily.If a person were to respond to this news by both joining as an exercise club and buying an alarm clock, that person would probably be
a. Mistaking an explanation for an argument
b. Mistaking an argument for an explanation
c. Mistaking a premise for a conclusion
d. Mistaking a cause for an indicator
e. Mistaking an indicator by a cause

Reply Like? Yes (1) | No

Pooja gupta 9 years ago

If the rate of change of y with respect to x is 5 and x is changing at 3 units per second, then y is changing faster than x.
true or false??

Reply Like? Yes (1) | No

Rishu 9 years ago

true

dy/dx=5
dx/dt=3

dx=3dt
dy/(3dt)=5
dy/dt=15

so x changes 3 times in one second and y changes 15 times in one second

Like? Yes (3) | No

bhanu to mounika 9 years ago

hi...can u explain me how u take no-74 directly

Reply Like? Yes (1) | No

pramit to Bala Murugan.T 9 years ago

Hey Bala.can u send me the qstns that u were going through before the tcs apptitude test..

Reply Like? Yes (1) | No

kalyanthallapalli to pallak kumari 9 years ago

hi kumari ,...wt r u dg?

Reply Like? Yes (1) | No

Lalitha Rajen 9 years ago

Cynthia and Reuben go to town to shop. Reuben purchases a hat and a
suite, which costs him 15 cents. Cynthia purchases a hat, the cost of
which is equal to Reubens suite. The rest of the money Cynthia spendsin buying a new dress. The new dress costs her one rupee more than
her hat. Cynthia says, if one and a half times money of hat, had we divided
unequally, we would had spent equal amount of money.
a) Reuben says," In that case", what is the cost of my hat?
b) How much money altogether they spent

Reply Like? Yes (1) | No

Pooja gupta 9 years ago

If y = f ( x )=( lx + m )/( nx - l ) then show
that f ( y )= x ??

Reply Like? Yes (1) | No

neha gupta 9 years ago

f(x) = (lx + m)/(nx-l)
y = f(x)
so
f(y) = f(f(x))
= f((lx + m)/(nx-l))
=( l(lx + m)/(nx-l) + m) / (n(lx + m)/(nx-l))x-l)
=( l(lx+m) + m(nx-l)) / (n(lx + m) - l(nx-l))
= (l^2 x +ml +mnx - ml) / (nlx + mn - nlx + l^2)
= (l^2 x +mnx) / (mn + l^2)
= x (l^2 +mn) / (mn + l^2)
= x
thus f(y) = x

Like? Yes (2) | No

siva 9 years ago

56, 90, 132, 184, 218,?
(A) 368
(B) 316
(C) 362
(D) 326

Reply Like? Yes (3) | No

Rishu 9 years ago

316
dividing each number of the series by 8 we get remainder as
0,2,4,0,2,4

Like? Yes (1) | No

Navjot kaur 9 years ago

1.
Alok and Bhanu play the following game on arithmetic expressions. Given the
expression
N = (
Θ
+ A)/B + (
Θ
+ C + D)/E
where A, B, C, D and E are variables representing digits (0 to 9), Alok would like to
maximize N while Bhanu would like to minimize it. Towards this end, they take turns in
instantiating the variables. Alok starts and, at each move, proposes a value (digit 0-9)
and Bhanu substitutes the value for a variable of her choice. Assuming both play to their
optimal strategies, what is the value of N at the end of the game? Also find a sequence
of moves (digits by Alok and variables by Bhanu) that would yield this value.
Note: Moves that lead to a divide-by-zero condition are disallowed. A non-optimal
sequence of moves is (5 → B, 6 → C , 3 → D, 2 → E, 0 → A) and the expression
evaluates to
Θ
/5 + (
Θ
+9)/2

Reply Like? Yes (5) | No

Richa 9 years ago

Hii guys does anyone has info regarding any upcoming offcampus of Infosys,cognizant or accenture at ncr for 2015 passouts. Will dere be offcampus drives for 2015 batch or not

Reply Like? Yes (1) | No (1)

sunil 9 years ago

x is positive
y=x-8
x^2=y^2
data suffi.

Reply Like? Yes (1) | No

neha gupta 9 years ago

for this use substitution method acc to information given
answer is x=4 and y= -4

Like? Yes (2) | No

BALAKRISHNAN G 9 years ago

TCS wen ll b announce the 23rd written exam result..............

Reply Like? Yes (1) | No

gunjali to anjali gupta 9 years ago

@anjali u gave ans. of this question

1/x+1/y=1/z where x=12 and y,z positive integer how many possible value of y and z ?
a) 4
b) 7
C) 12
d) infinite

plz explain ur concept?

Reply Like? Yes (2) | No

Rishu 9 years ago

ans is 4

1/z=1/12+1/y
z=1/(1/12+1/y)

z(max)=1/(1/12+1/infinity)=12
z(min)=1/(1/12+1/0)=0

so range of z varies from 0 to 12 for positive integral value of y

y=1/(1/z-1/12)

now substituting z=1,2.3,4,5,6,7,8,9,10,11 in above equation we can easily conclude that y is a positive integer only when z=3,4,6,8

thus there are only 4 possible values of y & z according to given condition

Like? Yes (2) | No

saunak 9 years ago

how to prepare for tcs offcampus written exam anyone plz suggest?

Reply Like? Yes (1) | No (2)

tanu 9 years ago

amcat m kese question aate hai ??? ...................

Reply Like? Yes (1) | No

Shubham Sethi 9 years ago

Amcat is one of d toughest exams for aptitude in India.If u prepare well,U can crack it easily.
Also amcat asks questions based on computers.
You can also refer amcat website for more information.
Thanks

Like? Yes (1) | No (1)

ayushi 9 years ago

mera kab selection hoga ??????? resume kis base pr select hota h tcs me

Reply Like? Yes (1) | No

Shubham Sethi 9 years ago

They have their own requirements.
If u fulfill the eligibility, u r likely to b shortlisted.

Like? Yes (2) | No

ayushi 9 years ago

thanku ...... i m still confused about some thing..

Like? Yes (1) | No

ayushi 9 years ago

frndz i need your help i want to ask for off campus drives .... who is eligible comanies selects for off campus drives or other else

Like? Yes (1) | No

umesh 9 years ago

any 1 got tcs joining on mar 14th , kerala location???

Reply Like? Yes (1) | No

Nandini to Deep Singh 9 years ago

Hey deep Singh, pls send me ibm questions to my mail nandinisummy@gmail.com

Reply Like? Yes (1) | No

sugayathri 9 years ago

20.01.16,i have doubt guys pls clarify it.how u have taken those numbers only as subject marks and how u got those numbers as 81,81........ etc in 5 subjects yesterdays question

Reply Like? Yes (1) | No

Christopher Kangwa 9 years ago

If 28C2r:24C(2r-4)=225:11, find r

Reply Like? Yes (1) | No

deepika 9 years ago

A alone can do 1/4th of the work in 2 days. B alone can do 2/3th of the work in 4 days. if all the three work together, they can complete it in 3 days so what part of the work will be completed by C in 2 days ?

Reply Like? Yes (3) | No

Rishu 9 years ago

let C can complete the work in x days alone
1/8+1/6+1/x=1/3
x=24
work done by C in 1 day=1/24
so part of work completed by C in 2 days is (1/24)*2=1/12th

Like? Yes (2) | No

Asif 9 years ago

Who is odd
QWZB,
BHKM
WCGJ
MSVX

Reply Like? Yes (3) | No

Rishu 9 years ago

WCGJ
in all other cases
1st letter + 6 = 2nd letter
2nd letter + 3 = 3rd letter
3rd letter + 2 =4th letter

eg: Q+6=W,W+3=Z,Z+2=B

Like? Yes (2) | No

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