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A track star runs two races on a certain day. The probability that he wins the first race is 0.7; the probability that he wins the second race is...

A track star runs two races on a certain day. The probability that he wins the first race is 0.7; the probability that he wins the second race is 0.6; and the probability that he wins both races is 0.5. Find the probability that

This question was asked on Mar 15, 2010.

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