[Official] Quant Thread for 2015!

A number when divided by 91 gives the remainder as 51. What will be the remainder when this number is divided by 13 ?

a) 7 b) 12 c) 0 d) 11

A man builds 1/8th part of a wall every day. out of the length of the wall built per day, 20% falls of at the end of the day till the wall is completely built. in how many days can he complete the construction of the wall?

Which test series is better as per new pattern, CL or IMS?

If you have any other institute's test series to recommend,  kindly mention the name.

In Kolkata.

All possible pairs are formed from the divisors of 21600. How many such pairs have HCF of 45? 8 276 34 4

Please Explain 😃

my quant is weak, i have the study material of TIMES, IMS and RS Agarwal

can someone suggest the best way to go about it, which material will strengthen my basics and have CAT questions that give me a feel of what questions will actually come 

Has anybody joined testfunda mock series this time or ever before ? Let me know how effective and comprehensive is it . Also suggest if there any good mock series that can be joined specially ones giving good post-mock analysis ?

The min value of the expresion p+1/p (p>0) is 2.How?

If bothe the roots of the quad eq ax^2+bx+c=0 lie in the interval (0,3),then a lies in

  • (-1,3)
  • (-1,-3)
  • (1,3)
  • none of these
  • (-(121)^1/2 /91,-(8)^1/2)

0 voters

2 fair dice r thrown.Find the probab of getting

a prime no less than 8

my sol:

possible prime no are 2,3 and 5

therefore,possibilities

(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)

(3,1)....................................(3,6)

(5,1)......................................(5,6)

hence,probab =18/36=1/2

ans=13/36

Rama nd shyam r running in d race.probab of their winning r 1/5 and 1/2 respectively .find  d probab that neither of them will win the race.

my sol:(1-1/5)(1-1/2)=2/5

ans:3/10

in 2 bags,there r to b put altogether 5 red nd 12 white balls,neither bag being empty.how must d balls b divided  so as to give a person who draws 1 ball frm either bag

1)d least chance of drawing a red ball

2)d greatest chance of drawing a  red ball

A party of n persons sit on a  round table.find d odds against 2 specified persons sitting nxt to each other.

my sol:

odds against an event=P(E)'/P(E)

P(E)'=(n-2)! X (n-2)C2 X 2!/(n-1)!

P(E)=(n-2)!X2!/(n-1)!

therefore,P(E)'/P(E)=(n-2)(n-3)/2

ans:(n-3)/2

"There are 2/3 as many mango trees as there are apple trees "

Please tell me ...what does this means .

No of 9s in the number (99999989999)^2 ? 

Hi Puys and Pirls,

Did we upload our photograph and signature while registering for CAT last year?

Apologies for deviating from the topic..

Oliveboard aisa hi paper banata h kya 😲 ... bhai aise toh humse na ho payega... oCAT 01(free wala) ... bhayankar ...poora complete karne ki bhi himmat nhi thi ..

find the maximum value of the expression ? 1/(x^2+5x+10)

a.15/2
b.1

c.4/15. can someone Pls explain d approach??

A sprinter started running on a circular path whose radius is r m. His speed (in m/sec) is (pi/800)R, during the first 100 seconds, (pi/1600)R, during the next 400 seconds, (pi/3200)R during the next 1600 seconds and (pi/6400)R during the next 6400 seconds and so on where R = (16/15)r. What is the ratio of the times taken by him for running the first and second rounds?

A)17:48

B)4:13

C)85:26

D)16:63

can anyone help me with this question

given x>0,y>0 and xy^2=27 . find the minimum value of 32x+y ??

What is the maximum value of (a + 1)(b + 3)(c + 1) if a + b + c = 12?

  • 4100/21
  • 216/7
  • 2
  • 4913/27
  • 1/3

0 voters