Square of a number between 100 and 110 | maths tricks | fast calculations

How many prime numbers are there between 110 and 120?

The sum of the squares of two positive numbers is 100 and difference of their squares is 28. Find the sum of the numbers:

Given that A= {Perfect cubes between 10 and 100} B={Perfect squares between 10 and 100} and B={Perfect squares between 10 and 100}.Find n(A cap B)

The square root of a positive number less than 100 lies between: