Exams

Two pipes A and B can separately fill a cistern in 60 min and 75 min respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 min. In how much time, the third pipe alone can empty the cistern ?

P, Q, R, S, T and U are six consecutive odd numbers and their average is 52. What is the product of P and U ?

14 persons are seated around a circular table. Find the probability that 3 particular persons always seated together.

The man who is specialist in wine making is called as ?

If logx916 = -12, then the value of x?

Consider the following information and answer the questions based on it.

Out of the 75 birders, 15 wanted to see only sunbird, 10 wanted to see only flycatcher, 12 wanted to see both sunbird and nuthatch, 15 wanted to see only bee-eater, 13 wanted to see both sunbird and bee-eater, 5 wanted to see both flycatcher and nuthatch and the remaining wanted to see only nuthatch.

The ratio of birders who like nuthatch to those who like bee-eaters is

How many A's are there in the following sequence which are immediately followed by B as well as immediately preceded by Z?

A M B Z A N A A B Z A B A Z B A P Z A B A Z A B 

The cultivation of crops in regions with an annual rainfall of 750mm is called as ____.