Question

A super class Number is defined to calculate the factorial of a number.

Answer 1

The factorial of a number is defined is the product of natural numbers from one to that particular number. Mathematically, 

n! = 1 * 2 * 3 * .... * (n-1) * n

For example, the factorial of 4 is 

4! = 1 * 2 * 3 * 4 = 24

This article will explain you how to find the factorial of a number through iteration as well as recursion.