[Official] Quant Thread for 2015!

A and B decide to meet at a cafe between 5:00 pm to 6:00 pm. They agree that the person who comes first will wait for exactly 15 minutes for the other. If each of them arrives at a random time between 5:00 pm to 6:00 pm. What is the probability that meeting takes place?

Dear Friends I am new to this forum but would like to ask you people that I have ARUN sharma for Quant section  which is 2 years old will it suffices for the Quant section according to the new pattern or Do I need to Buy a new book In addition I had old material of Times Please please respond Quickly Its urgent

123123123.......... 300 digits mod 37 = ? Share the approach too

Plz solve dis equation

25/8x- 2.5/x=5

Q A regular hexagon with perimeter 12root 2 units lies in the Cartesian plane in such a way that its center is on the origin,two of the vertices lie on the X axis,and the midpoints of two of its sides lie on the Y axis.If the portion of the hexagon that lies in Quadrant 1 is completely revolved around the X axis,a solid whose volume is A1 cubic units results.If the same portion is completely revolved around the Y axis, a solid with volume A2 cubic units results..Find the ratio (A1/A2) ?

In a total set of 100, A=30, b=75,c=65. 

Find minima & Maxima.. EXPLAIN too

hey guys anyone given nmat today??

382382382....300digits, remainder when this no is div by 101 is?

http://imgur.com/eAHLvKT

options: a) 120 b)90 c)108 d)96

Sum upto n terms of the series

3, 7, 12, 18, 25...

or 4, 7, 12, 19, 28

How to go about these in general i.e function with constant second difference? Or maybe even constant third difference say, 1, 8, 17, 30, 49, 76 ?

Is there a quick way to form the equation and then apply sigma n or n^2 formulae?

plz tell


51,57,102,324,?,6390

The probability that 'Neo' will pass the examination is 1/6 and the probability that 'Morpheus' will pass the examination is 2/3 What is the probability that both will fail in the examination?

This one is probably discussed before, but can't find now.

How many ways can 9 people sit around 9 chairs placed 3 on each sides of an isosceles triangle shaped table?

In how many ways can 14 women and 5 men be seated in a row such that there are exactly 3 women between every two consecutive men? 

Find the sum of all such four digit natural numbers whose any two consecutive digits when read as a two digit number from left to right is a perfect square?

DI - CL mock

http://imgur.com/uRYPuFf

Q:

If the salary of each hardware inhouse employee is increased by 50%, what is the new margin percentage of the company? (All other factors remain the same)

a- 21.5%

b  27%

c  35.59%

d  45.9%

OA : d 

I am unable to understand the relation between salary of inhouse employee and the margin as no such thing is stated explicitly. 

Any watsapp group for CAT 2015?

Explain approach

http://s21.postimg.org/6phlitl9j/image.png

Among 250 viewers interviewed who watch at least one of the three TV channels, namely Star, Zee and Sony, 116 said they watch Zee, 127 said they watch Sony, while 107 said that they watch Star. If 50 of them watch exactly two channels. How many of the viewers watch exactly one channel?

in how many ways can RAINBOW be arranged so that A is before I and I is before O?

PLS EXPLAIN HOW SOLVE THIS!! THE CONCEPT?