Special.Factorial Method

public static double Factorial(
	int n
)

Public Shared Function Factorial ( 
	n As Integer
) As Double

public:
static double Factorial(
	int n
)

static member Factorial : 
        n : int -> float 

Parameters

n  Int32

A positive integer.

Return Value

The factorial of a number n is the product of all integers from one up to and including n.

Reference