SOLUTION: A bag contains 6 red marbles, 7 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red?

Question 951613: A bag contains 6 red marbles, 7 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement.
What is the probability that all the marbles are red?
What is the probability that exactly two of the marbles are red?
What is the probability that none of the marbles are red?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A bag contains 6 red marbles, 7 white marbles, and 7 blue marbles. You draw 4 marbles out at random, without replacement.
What is the probability that all the marbles are red?:: 6C4/20C4 = 0.0031
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What is the probability that exactly two of the marbles are red?
6C2*14C2/20C4 = 0.2917
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What is the probability that none of the marbles are red?
14C4/20C4 = 0.2066
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Cheers,
Stan H.
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