Question 1200783
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"At least one" is the complement event to "no one".


It gives the <U>ANSWER</U>


    P(at least one) = 1 - P(no one) = 1 - (1-0.15)^3 = 1 - 0.85^3 = 0.385875 (rounded).
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Solved, with short and complete explanation.