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Given the natural numbers x and y satisfy (1 + x!)(1 + y!) = (x + y)! What is the value of x + y?

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Given the natural numbers x and y satisfy (1 + x!)(1 + y!) = (x + y)! What is the value of x + y?
posted Apr 30 by anonymous

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1 Answer

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I think (x + y) = 3 as x and y can only take the values 1 and 2 and any other values of x and y will either lead to fractions or 0.

answer May 1 by Tejas Naik



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