Python Program to Find the Factorial of a Number Tutorial
In this Tutorial you will learn to write a Python Program to find the factorial of a number using Iterative Method ( for loop ).
The factorial of a positive integer n, which is denoted as n!, is the product of all positive integers less than or equal to n.
That is n! = n * (n-1)*(n-2)*....*3*2*1
So 4! = 4 * 3 * 2 * 1 which is equal to 24.
Factorial for the numbers 0 and 1 is 1. That is 0! = 1 and 1! = 1.
For negative numbers factorial value doesn't exists.
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