An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them
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An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them all by the time it reaches the top floor, number 6. In how many ways could the operator have perceived the people leaving the elevator if all people look alike to him? What if the 8 people consisted of 5 men and 3 women and the operator could tell a man from a woman?
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a If all people look alike to the operator he would not be able to distinguish between them There...View the full answer
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