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If \(x\) and \(y\) are positive integers, is the product \(xy\) even?

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If \(x\) and \(y\) are positive integers, is the product \(xy\) even?

by Vincen » Wed Apr 28, 2021 2:04 am

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If \(x\) and \(y\) are positive integers, is the product \(xy\) even?

(1) \(5x - 4y\) is even
(2) \(6x + 7y\) is even

Answer: D

Source: GMAT Prep
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