SOLUTION: there are 7 red balls and 8 green balls in a bag what is the probability of pulling out two red balls if the balls are not replaced in the bag?

Question 473058: there are 7 red balls and 8 green balls in a bag what is the probability of pulling out two red balls if the balls are not replaced in the bag?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
there are 7 red balls and 8 green balls in a bag what is the probability of pulling out two red balls if the balls are not replaced in the bag?
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# of ways to select 2 red balls: 7C2 = 21
# of ways to pick 2 balls randomly: 15C2 = 105
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P(select 2 red) = 21/105 = 7/35 = 1/5
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Cheers,
Stan H.
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