Learn Factorial Number

 What do you mean by Factorial Number?

What is Factorial Number?

The factorial of non-negative integer n is denoted by n! and calculated by the product of integer numbers from 1 to n.

Factorial Example

6! = 6x5x4x3x2x1 = 720

The value of 0! is by convention equal to 1.

Factorials of non-integer values

It is possible to determine the factorial of non-integer numbers.

Example

(-0.5)! = Π and (0.5)! = 0.5Π

(2.5)! = 2.5 x (1.5)! = 2.5 x 1.5 x (0.5)! = 1.875Π


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