The general form of permutations is P(n, r) = \frac{n!}{(n-r)!}. thus: P(52,5) = \frac {52!} {(52-5)!} = \frac {52!}{47!} = 311,875,200 This ordered list of favored cards in poker is called a permutation.

A lot of poker deals with mathematical understanding. Probability, favorability and betting all utilizes an understanding of math. You do not have to be an expert to win, but it can always increase your chance of surviving if you lose.