Official Quant thread for CAT 2013

p & c

Unit digit of 7^15^16^17 ??...with approach........


p & c

if in a seating arrangement question its given that there are five people A,B,C,D,E and B sits between A and C. do we consider A nd C to be the immediate neighbours of C or is it not necessary? as in case of ABC and ABDC..

with approach


4a + 2b + c = 35, where 'a', 'b' and 'c' are positive real numbers. Find the maximum value of a^1/2 × b^1/4 × c^1/8....


a^2/a+b=b^2/c+a=c^2/b+a. find value of( 1/a+1) + (1/b+1) + (1/c+1)

yaar ye ant question ho gya k kya ho gya. har slot me yahi que aa rha h. prometric ne to band baja di is bar repetition ki :banghead:
😠😐😟





puys how to find the number of terms in or power of 10 in 1/3^45?

65% of the students in a class have taken subject A, 80% have taken subject B, 75% have taken subject C and 85% have taken subject D. At least what percentage of students have all four subjects?

65% of the students in a class have taken subject A, 80% have taken subject B, 75% have taken subject C and 85% have taken subject D. At least what percentage of students have all four subjects?

Coefficient of x^4 in (x^2 - x -2)^7 ?

In how many ways can 2310 be expressed as a product of 3 factors?

if x

please share your approach as well.

5^5^6^7 ??



The coefficient of a^12b^8 in the expansion of (a^2 + b)^13 is

Once upon a time, the king of a jungle planned a 2-kilometre race between a rabbit and a tortoise. Soon after the start of the race, the rabbit took a huge lead. On realizing that even after taking a nap of 't' min, he would beat the tortoise by 13 min, he stooped under a tree and went to sleep. Meanwhile the tortoise kept walking. When the rabbit woke up, he realized that he had slept for (14 + t) min, and immediately started

running towards the target at a speed 3/2 times his original speed. The race eventually ended in a dead heat. If the ratio of the original speed of the rabbit to that of the tortoise was 6 : 1 and the rabbit overstretched his nap by 7/6t min, then how long did the tortoise take to complete the race?

Guyss i have a score 0f 249 in sept CMAT.

Any good college that i could apply to ?????

the answer is given as T3 but im getting that they wont meet at all..If you're getting the answer as T3 please explain your approach.