Is this the right way?
Total songs = 14
Not favorites = 13
Favorites = 1
P(Song 3 is favorite) = P(Song 1 not fav) * P(Song 2 not fav) * P(Song 3 fav)
= 13/14 * 12/13 * 1/12
I would say that this is NOT the right way, but I could be wrong. Nowhere in the question does it say that the first two songs played are not his favorites. Thus the prob of this event is independant
of any other event. But, your answer works, and in this case you would get the points.