List of top Quantitative Aptitude Questions on Number System - Exponents and Perfect Squares asked in IBSAT

What is the difference between the sum of the cubes and that of the sum of the square of first twenty natural numbers?

If 'y' is a number such that \(y=x^{x/2}\), where x is a positive integer, what is the difference between the largest possible four-digit value of y and the smallest possible three-digit value of y?