Question 957451: An urn contains 4 red, 6 white, and 5 blue marbles. Three marbles are selected at random and without replacement. What is the probability that one of each color is selected? Give your answer as a decimal number, with 3 decimal places.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! An urn contains 4 red, 6 white, and 5 blue marbles. Three marbles are selected at random and without replacement. What is the probability that one of each color is selected? Give your answer as a decimal number, with 3 decimal places.
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# of ways to get red/white/blue triple:: 4*6*5 = 120
# of possible triples:: 15C3 = 455
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P(red/white/blue triple) = 120/455 = 0.234
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Cheers,
Stan H.
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