Learning Factorials
A Factorial, usually seen written as n! is the product of all the integers that are less than n.
For example 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
It is very important to know that when dividing factorials you can reduce the common multiples.
For example 8! / 6! would be:
(8 x 7 x 6 x 5 x 4 x 3 x 2 x 1) / (6 x 5 x 4 x 3 x 2 x 1) and can be reduced to
8 x 7 = 56
Watch the math video below for a detailed explanation!