SOLUTION: if there are 5 red balls ,10 black balls if we any 2 balls at randomly what is the probability of getting Both as red balls?

Question 962238: if there are 5 red balls ,10 black balls if we any 2 balls at randomly what is the probability of getting Both as red balls?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
if there are 5 red balls ,10 black balls if we any 2 balls at randomly what is the probability of getting Both as red balls?
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# of ways to succeed:: 5C2 = 10 ways
# of random pairs:: 15C2 = 15*7 = 105 ways
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Ans: P(2 red balls) = 10/105 = 2/21
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Cheers,
Stan H.
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