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Thread: Solving for n....

  1. #1
    Member diddledabble's Avatar
    Jul 2009

    Question Solving for n....

    I have this formula and need to solve for n. How do I do it since it is a factorial? Please show me, my mind is too tired to figure it out.  n!/{k!(n-k)!}
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  2. #2
    Master Of Puppets
    pickslides's Avatar
    Sep 2008
    To solve for n, your expression must be equated to something else. I.e it must have an equals sign somewhere.

    Does this look firmiliar?

     ^nC_k = \frac{n!}{k!(n-k)!}
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