Factorial of a Number
Formula:n! = n × (n-1) × (n-2) × ... × 1
Understanding Factorial of a Number
The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. By convention, the value of 0! is 1. It is not defined for negative numbers, and it's usage is widely seen in permutations, combinations, and binomial theorem.
Parameter usage:
n
= a non-negative integer for which we want to compute the factorial.
Output:
The function returns the factorial value of the provided integer n.
Data validation
An error is returned if the input is not a non-negative integer.
Summary
The calculator computes the factorial value for a given non-negative integer value. It is a fundamental function in combinatorics and helps in calculating combinations and permutations.
Tags: Math, Factorial, Combinatorics