10 cats caught 10 rats in 10 seconds. How many cats are required to catch 100 rats in 100 seconds ?

If A:B = 3:4, C:B= 5:4, C:D=10:9 then A:B:C:D is -

A fruit seller had some apples. He sold 40% apples and still has 420 apples left. Originally he had :

What percentage of numbers from 1 to 70 has 1 or 9 in the unit digits ?

A beg contains 2 red, 3 green and 2 blue balls. If two balls are drawn at random, what is the probability that...

If a series looks like - 1,1.5,2.5,4,........, then which of the following comes next in the sequence ?

In a group of 60 people like Coca cola and 42 people like Pepsi Cola. Each person likes at least one of the tw...