Joined: Fri Jul 15, 2011 8:40 am
#1: Bill is renting DVDs from the video store. He must choose 3 DVDs from a list of 8 new releases and then decide in what order to watch them. how many different schedules of videos can he create, if he cannot watch the same movie more than once?
I don't get why the answer is 336. I understand that there are 8 dvds to choose from for the first of three dvd then 7 dvds to choose from then 6 dvds to choose from resulting in 8*7*6. What confused me is "and then decide in what order to watch them." part.
The 3 dvds can be ordered in 3*2*1 = 6
So shouldn't the overall possibilities be 336 * 6?