[Official] Quant Thread for 2015!

Please share your approach(es) A circular sheet C of the maximum possible area is cut out from a metal sheet, which is in the shape of a square. Similarly, maximum possible number of circular sheets – C1, C2, C3, … – of varying radii are cut out from another identical metal sheet, such that the leftover area is the minimum possible. What is the approximate value of the ratio of the area of C to the sum of the areas of C1, C2, C3, …?

  • 1 : √2
  • (4 – pi) : 4
  • pi : 4
  • 1 : 1

0 voters


A four-digit number N has 15 factors. How many factors can N2 have?

  • 45
  • 30
  • NONE
  • 29

0 voters

P attempts a question paper that has 3 sections with 6 questions in each section .if P has to attempt any 8 questions,choosing at least 2 questions from each section,then in how many ways can he attempt the paper?.. Please share the approach as well

How many positive integral solutions exist for a+b+c=10.

How many not negative integral solutions exist for a+b+c=10.

Please explain

How many positive integral solutions exist for a+b+c=10.

How many not negative integral solutions exist for a+b+c=10.

Please explain

PNC doubt 

Q. There are 15 ppl .. they have to be divided into 

a. 6 , 2 and 3 ppl

b. 5 , 5 and 3 ppl 

c.. 6 , 2 and 3 ppl (this time each team is given a name A, B and C)

d .5, 5 and 3 ppl(this time each team is given a name A, B and C)

Plz give the answers for all 4 cases and explain how 'a' and 'c'  & 'b' and 'd' cases are different !!

(-100)/(-99) * (-99)/(-98) * ...... * 98/99 * 99/100 = ??

Hi Puys!!.. While solving quants question I face following problem :

1. I cant solve the questions in given time. I take longer for easy questions 

2. Majoritry of questions doesnt click. Its like they are new to me 

3.I dont know the concept.

Ok,the background is that i am giving numerous practice testes.. Full lengths ,sectional everything. But improvement is minimal (or say zero). Cat 2013 I scored 84 Percentile . Please advise what to do .. **hopeless**

A small bird is taking rest at the centre of the base of a hemispherical cage. Suddenly it satnds up,flies to the top most point in the cage,then in a straight line to the cage door at the intersection of the curved surface and the base .in the process it covers a total distance of 482 cm.What is the radius of the hemisphere?

  • 150
  • 50
  • 200
  • 100

0 voters

A certain sequence is defined by the recursive relation Tn+1 = 2Tn+3

If T1=3 and T11= 6141, find T2+T3+T4+....+T10

2[root(2) + root(6)] / 3root[2+root(3)]

If the expression above is equal to a/b for coprime positive integers a and b, what is the value of a+b-3??

guys plz suggest book for quant...which has cat level questions...

what is the remainder when 7^333 is divided by 684?  Approach please

If f(x)= ax^2-b|x|...where a and b are constants...then at x=0,f(x)is

a)maximized when a>0&b>0

b)maximized when a>0&b

c)minimized when a>0&b>0

d)minimized when a>0&b

In an examination, a question paper consists of 12 questions divided into two parts i.e., Part I and Part II, containing 5 and 7 questions, respectively. A student is required to attempt 8 questions in all, selecting at least 3 from each part. In how many ways can a student select the questions? 

From a class of 25 students, 10 are to be chosen for an excursion party. There are 3 students who decide that either all of them will join or none of them will join. In how many ways can the excursion party be chosen?

http://i.imgur.com/Hf8KN0M.jpg

http://i.imgur.com/bhSuWvv.jpg

http://i.imgur.com/uAUn2GA.jpg

http://i.imgur.com/rcadPbO.jpg