Factorials

Factorial is the function of a nonnegative integer n denoted by

n!

and defined for positive n by the product

n! = 1×2×3×4× ... ×n

and for zero by

0! = 1

You can compute factorials with Evaluate.

$\blacktriangleright$ Evaluate

3! = 6

7! = 5040

10! = 3628800