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Math Help - Evaluate the Expression

  1. #1
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    Evaluate the Expression

    Hey Everyone

    Not really sure how I would evaluate these:

    10P4
    _
    P(A) when P(A) = 10/11

    and

    10C2

    Thought i'd shoot them out there and see if anyone could guide me in the right direction.
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  2. #2
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    Quote Originally Posted by BlakeRobertsonMD View Post
    10P4
    _P(A) when P(A) = 10/11 and 10C2
    This posting is almost impossible to read (decode).
    Here is my take on it.
    _{10} P_4 = \left( {10} \right)\left( 9 \right)\left( 8 \right)\left( 7 \right) = \frac{{10!}}{{\left( {10 - 4} \right)!}}.

    While _{10} C_2 = \frac{{10!}}{{2!\left( {10 - 2} \right)!}} = \frac{{10 \cdot 9}}{{2 \cdot 1}}

    I must say that I doubt this is your problem.
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