Just write what you want to factorial and it will say
Here is an example for factorial 5 x 4 x 3 x 2 x 1 <--- that is 5 factorial. Factorial is used to count how many different ways to order something. For example: How many ways can 3 stickers be aranged? you can count all 6 ways, or you can just do 3 factorial. The notation for factorial is !.
