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Twenty people check their hats at a theater. In how many ways can their hats be...

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Statistics

Twenty people check their hats at a theater. In how many wayscan their hats be returned so that

(a) no one receives his or her own hat?

(b) at least one person receives his or her own hat?

(c) exactly one person receives his or her own hat?

Answer & Explanation Solved by verified expert
3.9 Ratings (748 Votes)
GIVEN THATTwenty people check their hats at a theater In how many wayscan their hats be returned so thata no one receives his or her own hatb at least one person receives his or her own hatc    See Answer
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