9.Sara has eight new summer outfits. She plans to pack three of the new summer outfits in her trip to Tokyo.
9.Sara has eight new summer outfits. She plans to pack three of the new summer outfits in her trip to Tokyo.
(a)How many different ways can the three summer outfits be selected?
(b) Please describe the method used and the reason why it is appropriate for answering
the question. Just the answer, without the description and reason, will receive no credit
.