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If x and y are positive integers, is xy even DS01425
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GMAT DS01425
If x and y are positive integers, is xy even?
(1) x^2 + y^2 − 1 is divisible by 4.
(2) x + y is odd.
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If x and y are positive integers, is xy even?
(1) x^2 + y^2 − 1 is divisible by 4.
(2) x + y is odd.
Follow me on Social Media:
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