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Fixed Points in Permutations

  1. Aug 19, 2008 #1
    What is the expected number of fixed points in permutations? I got 1 as answer.
     
  2. jcsd
  3. Aug 19, 2008 #2

    HallsofIvy

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    Science Advisor

    I don't see any immediate way to prove it but that's what it looks like to me.
     
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