<PRE><B>Question 545783</B>
A bag contains 20 blue and 15 green marbles. Two marbles, without replacement are drawn at random.
What is the probability that both are blue? What is the probablity that at least one of them is blue?
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P(none are blue) = 15C2/35C2 = 105/595
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P(at least one is blue) = 1 - P(none is blue) = 1-0.1765 = 0.8235
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Cheers,
Stan H.
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