The smallest positive integer, which when multiplied by 392 gives the product a perfect square number, will be :

In a group of 35 people, 23 of them like coffee, 24 of them like tea and each person likes at least one of the drinks. How many like both? 

Find the average of the cubes of the first five natural numbers. 

Direction: What value will come in place of the question mark (?) in the following question?

14, 15, 31, 94, 377, ?

Direction: What value will come in place of the question mark (?) in the following question?

1, ?, 3, 15, 105, 945

What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square?

If 42573* is exactly divisible by 72, then what will come in place of *?

The smallest number, which when added to 680621 gives the sum a perfect square number, will be