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Math Help - Probability to pick same book

  1. #1
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    Dec 2011
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    Probability to pick same book

    If each of five people is asked to identify his or her favorite book from a list 10 best-sellers, what is the probability that at least 2 of them identify the same book?
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  2. #2
    Junior Member
    Joined
    Sep 2011
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    Re: Probability to pick same book

    Use the complement to figure out the probability that none of them identify the same book
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