Compute four 9’s to equal 10

Discussion in 'General Discussion' started by NOBama, Dec 30, 2008.

  1. NOBama
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    NOBama Senior Member

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    Using any combination of mathematical operators.
     
  2. Jon
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    Jon The CPA

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    (99-9)/9 = 10

    also

    99/9.9 = 10
     
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  3. NOBama
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    NOBama Senior Member

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    Nope...

    99 is not 9

    9.9 is not 9

    Nice try though :)
     
  4. editec
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    editec Mr. Forgot-it-All

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    ((9x9) + 9)/ 9 =10
     
  5. Jon
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    Jon The CPA

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    This is an old trick that my math teachers used to do in high school. 99 and 9.9 were acceptable because of the wording of the question. I knew the answer you wanted, but it was more fun to mix up the problem because of the ambiguity. :D
     

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