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8 June, 14:00

Suppose that first-, second-, and third-place winners of a contest are to be selected from eight students who entered. in how many ways can the winners be chosen?

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  1. 8 June, 14:12
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    As, order is important so we use permutation,

    total no. of students = n=8

    selected students = r=3

    nPr = n! / (n-r) ! = 8! / (8-3) ! = 336 different ways
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