If positive integers q and r are both even, which of the following must be odd?

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If positive integers q and r are both even, which of the following must be odd?

by AAPL » Fri Apr 09, 2021 10:17 am

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If the positive integers q and r are both even, which of the following must be odd?

A. q - r
B. q/r
C. q/r + 1
D. qr - 1
E. q(r - 1)

OA D

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Source: Beat The GMAT — Problem Solving | Fri Apr 09, 2021 10:17 am

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