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Math Help - Multiplication of Factorials

  1. #1
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    Cool Multiplication of Factorials

    Given that a, b, and c are positive integers solve the following equation.

    a!b! = a! + b! + c^2

    anyone?
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  2. #2
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    Re: Multiplication of Factorials

    The information given appears to be incomplete. Could yoy verify it pl?
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  3. #3
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    Re: Multiplication of Factorials

    ibudutt,

    the question is complete. I know you are thinking of 3 variables but 1 equation. But this question is solvable.
    by trial and error, a=2, b=3, c=2.

    But my concern is, is there any other way that can be used to solve it, systematically and algebraically?

    My thought : Try to relate the multiplication of 2 factorials and their sums.
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