Official Quant thread for CAT 2013

abrahamwilliam · August 30, 2013, 2:42am

how to solve 7^77

sannidhya87 · August 30, 2013, 3:13am

Solution of the inequality: |x + 2| > |3x – 5| is

catahead · August 30, 2013, 3:51am

Q4

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sannidhya87 · August 30, 2013, 4:05am

is there any formula for sum of n terms in HP?

rajat_cat · August 30, 2013, 4:18am

geometry question .. plz help me with the approach

rajat_cat · August 30, 2013, 4:44am

find the max value possible for f(x)=min[ (1/2) - (3 x^2)/4 , (5 x ^2)/4]
for range 0
a)1/3

b)1/2

c)5/27

d)5/16

ronnie_hellboy · August 30, 2013, 4:51am

I encountered a series problem where i had to calculate [25 x{1-(3/5)^8}]/(1-3/5). I lost a lot of time calculating values of higher powers.Is there a short-cut to calculate higher powers of numbers/ fractions / decimals?
e.g. (6/7)^9
(0.6)^10

(7)^53

beejaybj · August 30, 2013, 5:14am

If a, b and c are three positive integers in geometric progression, then the roots of the equation ax 2 + 4bx + 2c = 0 are

a)real

b)rational

c)imaginary

d)irrational

prats92 · August 30, 2013, 5:30am

A boat travels 100 metres in 9.7 seconds. Find its average speed in m/sec, if the current speed is 0.4 m/sec in a direction favouring the boat.

blowcat13 · August 30, 2013, 5:39am

There is a list of the 7 positive integer,such that (n+1)th number is always greater or equal to the nth number.the average of the first five numbers is 15, and the average of the last five numbers is 22.What can be the maximum value of 5th number in the sequence (a)22 (b)23 (c)28 (d)29

prats92 · August 30, 2013, 5:43am

Rama had a stock of goods worth Rs.50000. He sold 10% of the goods at 15% profit and 40% of the goods at 10% profit. 25% of the goods were damaged by fire and the remaining goods were sold back to the manufacturing company, at a loss of 10%. What is the total loss suffered by Rama?

likan · August 30, 2013, 5:58am

2. 333^555+555^333 is divisible by ? .................plz share approach...thanks in advance

11
37
3
2

0 voters

rajat_cat · August 30, 2013, 5:59am

plz tell the approach of the question
@sannidhya87 @trial.verison

rajat_cat · August 30, 2013, 6:11am

plz help with this ques
@sannidhya87 @ahsish9virgo @trial.verison

rajat_cat · August 30, 2013, 6:18am

guys what is d approach?

mukund_dev · August 30, 2013, 6:29am

how to calculate the length of common chord between two circles? (circle intersect at two points and are of different raddii) any formula?

div4848 · August 30, 2013, 6:54am

When is this year's prepathon starting?

devanki · August 30, 2013, 6:54am

In how many ways can the numbers {1, 2, 3, 4, 5, 6} be ordered such that no two consecutive terms have a sum which is divisible by 2 or 3?

1. 6

2. 12

3. 15

4. 18

5. 24

devanki · August 30, 2013, 6:54am