EASY MATH QUESTION, PLEASE HELP!

Tonya purchased 6 new CDs for her car CD player. The CD player can hold 6 CDs.

How many different way can the CDs be arranged?

6
720
216
36

Respuesta :

6! = 720 ways 

16/38 

1 / (6/20)^3 = 37 to 1
I'm pretty sure its 720