Question 895644
The probability that a person will pass a math exam is 5/8 and the probability that his friend will pass is 6/7 . Assuming the events are independent what is the probability that at least one will pass
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P(at least 1 pass) = 1-P(2 fail) = 1 - (3/8)(1/7) = 1-3/56 = 53/56
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Cheers,
Stan H.