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Math Help - Evaluate factorial

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    Evaluate factorial

    Evaluate 11!/8!
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    Quote Originally Posted by ccdalamp View Post
    Evaluate 11!/8!
    Either plug it into a calculator or...

    \frac{11!}{8!} = \frac{11 \cdot 10 \cdot 9 \cdot 8 \cdot 7 ~ ... ~ \cdot 2 \cdot 1}{8 \cdot 7 ~ ... ~ \cdot 2 \cdot 1}

    The 8, 7, 6, 5, 4, 3, 2 and 1 cancel leaving
    \frac{11!}{8!} = 11 \cdot 10 \cdot 9 = 990

    -Dan
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