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Mathematics, 31.08.2019 00:20 lizzie3545
Each of four students hands in a homework paper. later the teacher hands back the graded papers randomly, one to each of the students. in how many ways can the papers be handed back such that every student receives someone else's paper? the order in which the students receive their papers is irrelevant.
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Each of four students hands in a homework paper. later the teacher hands back the graded papers rand...
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