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Math Help - 9 coins 9 heads probability

  1. #1
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    9 coins 9 heads probability

    p[of tossing nine coins and getting all heads] = nCr*p^n*q^{n-r}=9C9*.5^9=.001953125

    Is this correct?
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  2. #2
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    If they are fair coins, you have it.
    Last edited by TKHunny; April 17th 2010 at 06:30 PM.
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