SOLUTION: Of 20 animals in a shelter, 12 are dogs, what is the probablity that 2 animals chosen at random are both dogs?

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Question 663398: Of 20 animals in a shelter, 12 are dogs, what is the probablity that 2 animals chosen at random are both dogs?
Answer by stanbon(75887) About Me  (Show Source):
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Of 20 animals in a shelter, 12 are dogs, what is the probablity that 2 animals chosen at random are both dogs?
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# of ways to succeed: 12C2 = 66
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# of possible outcomes: 20C2 = 190
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P(2 dogs) = 66/190
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Cheers,
Stan H.