Factorials
A
Factorial
function is used to multiply a series of natural numbers. Factorials are often used in
combinations
and
permutations
. A
factorial
is represented by the highest value followed by an exclamation mark (!), for example, the function
five factorial
is written as
5!
Factorials are written in expanded form to do calculations:
5! = 5 × 4 × 3 × 2 × 1 = 120
From this point, the math solutions are regular:
Here is a script to calculate factorials:
n=
!
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©Jeff LeMieux, revised March 2013