With ? a closet contains 8 pairs of pants,10 shirts and 4 pairs of shoes. how many leaves on a tree diagram would represent all possible combinations of outfits.

For the answer to the question above asking, how many leaves on a tree diagram would represent all possible combinations of outfits?
This is the fundamental theorem of counting you need to multiply the number of outcomes for each event Outfits = pants x shirts x shoes.
So 4 x 8 x 10 
So the answer is there are 320 possible combinations of outfits