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Suppose that \(x,y,z\) are positive integers satisfying \(x \le y \le z\), and such that the product of all three numbers is twice their sum. What is the sum of all possible values of \(z\)?

 Apr 9, 2020
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The sum of all possible values of z is 4 + 5 + 6 = 15.

 Apr 9, 2020

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