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Math Help - Quick and easy but like now urgent!

  1. #1
    Newbie Audriella's Avatar
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    Quick and easy but like now urgent!

    [CENTER] What is the formula for P^c(n,r) = ?
    This formula goes along with P(n,r) = n!/(n-r)! and C(n,r) = n!/r!*(n-r)![CENTER]




    I need to know this like now and it would be really nice for someone to answer this thank you.
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Audriella View Post
    [CENTER] What is the formula for P^c(n,r) = ?
    This formula goes along with P(n,r) = n!/(n-r)! and C(n,r) = n!/r!*(n-r)![CENTER]




    I need to know this like now and it would be really nice for someone to answer this thank you.
    that is a very weird formula, why would you need to know that? P here represents the permutation formula?

    it would be: P_{(n,r)}^{C(n,r)} = \left[ \frac {n!}{(n - r)!}\right]^{n!/[r!(n - r)!]}

    which cannot really be simplified nicely, not from what i can see
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