SOLUTION: a jar contains 13 marbles, 3 red, 4 white, and 6 blue. Two marbles are drawn without replacement. What is the probability they are the same color?

Algebra ->  Probability-and-statistics -> SOLUTION: a jar contains 13 marbles, 3 red, 4 white, and 6 blue. Two marbles are drawn without replacement. What is the probability they are the same color?       Log On


   

Question 294990: a jar contains 13 marbles, 3 red, 4 white, and 6 blue. Two marbles are drawn without replacement. What is the probability they are the same color?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a jar contains 13 marbles, 3 red, 4 white, and 6 blue. Two marbles are drawn without replacement. What is the probability they are the same color?
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P(2red or 2white or 2blue)
= P(2red) + P(2white) + P(2blue0
= 3C2/13C2 + 4C2/13C2 + 6C2/13C2
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Cheers,
Stan H.