Question 330098: Your friend randomly selects 2 movies from your collection to borrow. Your collection includes 9 comedies, 5 dramas, 3 mysteries, 1 musical, and 2 horror movies. What is the probability that both movies are comedies?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Your friend randomly selects 2 movies from your collection to borrow. Your collection includes 9 comedies, 5 dramas, 3 mysteries, 1 musical, and 2 horror movies. What is the probability that both movies are comedies?
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# of ways to pick 2 comedies: 9C2 = (9*8)/(1*2) = 36
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# of ways to randomly pick 2 movies: 20C2 = (20*19)/(1*2) = 190
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P(2 comedies) = 36/190 = 0.1895
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Cheers,
Stan H.
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