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(a) There are 12 European cities that Bob

would eventually like to visit. On his next vacation, though, he only has time to visit 3 of the cities: one on Monday, one on Tuesday, and one on Wednesday. He is now trying to make a schedule of which city he'll visit on which day. How many different schedules are possible? (Assume that he will not visit a city more than once.)

(b) From the 13 albums released by a musician, the recording company wishes to release 8 in a boxed set. How many different boxed sets are possible?

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