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Math Help - equation equals 100

  1. #1
    MJR
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    equation equals 100

    How do you use four number 7's in an equation using all four operations that equal 100? You can use the square symbol too.
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  2. #2
    MHF Contributor ebaines's Avatar
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    How about....

    This doesn't use all 4 operators, but maybe that's OK:

    <br />
\left( \frac {77-7} 7 \right) ^2<br />
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