SOLUTION: George is watching videos at home. In his videotape library, he has four adventure films and five comedies. If he chooses to watch two different videos, what is the probability tha

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Question 40312: George is watching videos at home. In his videotape library, he has four adventure films and five comedies. If he chooses to watch two different videos, what is the probability that both are comedies?
Please help
Found 2 solutions by fractalier, Nate:
Answer by fractalier(6550) (Show Source):
You can put this solution on YOUR website!
To pick the first comedy, the odds are 5/9. But once he has picked a comedy, there are only 4 left out of eight total...so his odds of picking another comedy the second time is 4/8 or 1/2...now multiplying the probabilities we get...
5/9 * 1/2 =
5/18

Answer by Nate(3500) (Show Source):
You can put this solution on YOUR website!
C(5,2)/C(9,2)
10/36
5/18
or
(5/9)(4/8) = 20/72 = 10/36 = 5/18