Question

What is the number of different ways to order a 5-song playlist chosen from a selection of 12 songs?

Answer 1

as far as I can tell is just a Permutation.

$\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad \qquad _{12}P_5=\cfrac{12!}{(12-5)!}$