A student wants to put 3 songs on her ipod from a collection of 25 songs. How many different ways can she do this

Question

how do you set this up and how do you solve it after you get it set up.

Answer 1

No problem, Jay! This is a basic question. It is vague, though. The word "ways" implies that order counts, so we would use permutation. Remember that the permutation formula is:

_nP_r = n! / (n - r)!

In your case, the n = 25 and r = 3. Just plug in and simplify!