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Stats, to simplify the expression

  1. Dec 6, 2008 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

  2. jcsd
  3. Dec 6, 2008 #2
    Use the formula for the number of permutations, then use a calculator.
  4. Dec 7, 2008 #3


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    Science Advisor

    10P8 is a single number. You have written 4 numbers. Which is your intended answer? (None of them are correct.) Do you know the definition of "nPm"?

    (A calculator is not necessary. I suspect the reason the problem said "simplify" is that this can be written as the product of two simple numbers.)
  5. Dec 7, 2008 #4
    I think it is convention that nPr = n!/(n - r)!
  6. Dec 8, 2008 #5


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    Science Advisor

    I was asking yamuna. If he/she knows the definition of nPr, this should be a simple problem.
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