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Is the sum of a certain pair of integers odd?

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Is the sum of a certain pair of integers odd?  [#permalink]

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New post 31 Mar 2019, 06:48
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A
B
C
D
E

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  15% (low)

Question Stats:

95% (00:45) correct 5% (00:20) wrong based on 20 sessions

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Is the sum of a certain pair of integers odd?

(1) The difference between the integers is odd.
(2) One of the integers is even and the other is odd.

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Re: Is the sum of a certain pair of integers odd?  [#permalink]

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New post 31 Mar 2019, 08:57
Addition and subtraction follow the same even/odd rules (because adding is the same thing as subtracting -- when you subtract, it's the same thing as adding a negative number). So any time a and b are integers and a-b is odd, a+b will also be odd, and Statement 1 is sufficient. Statement 2 is clearly sufficient, so the answer is D.
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Re: Is the sum of a certain pair of integers odd?   [#permalink] 31 Mar 2019, 08:57
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Is the sum of a certain pair of integers odd?

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