Factorial Operator. x is a nonnegative integer.

Is factorial an operation?

A factorial, denoted by an exclamation point (!), is an operation applied to a non-negative integer (i.e.the numbers 0, 1, 2, 3, etc.) that is executed by taking the product of all the positive integers less than or equal to the number stopping at 1.

Is factorial a mathematical operator?

The factorial operation is encountered in many areas of mathematics, notably in combinatorics, algebra, and mathematical analysis. Its most basic use counts the possible distinct sequences – the permutations – of n distinct objects: there are n!.