2. A cage contains 4 black and 4 white mice that are available for a biology experiment. Three mice are selected at random. What is the probability that at least one is black and at least one is white?
3.A salesperson plans to visit Annapolis, Bloomington, Carmel, Detroit, and Elksville on his business trip. Since Annapolis is not in the Midwest, he wants to visit that city last. If his boss randomly selects the order of all five cities to be visited, what is the probability that Annapolis is last?
I'm figuring for the 2nd one I'd use the compliment in an equation like 1-Pr[something]-Pr[something]
As for the other one...not a clue
Anyone mind walking me through the process of solving these questions?
Edit: Solved the first one