Question

You download 15 music files on your computer and plan to save 7 of them to an MP3 player. In how many ways can u arrange the songs

Answer 1

Whwhiwshhdgdjwiaoqjwbebhdhdbsnjsjs

Answer 2

32,432,400

Explanation:

This you can use a permutation.

P(15,7)15x14x13x12x11x10x9

There are 32,432,400 ways to arrange it.