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N is a positive integer
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06 Aug 2024, 00:56
06 Aug 2024, 00:56
Expert Reply
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Question Stats:
82% (00:39) correct
17% (00:29) wrong based on 17 sessions
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N is a positive integer
Quantity A |
Quantity B |
Remainder when \(N^2-N\) is divided by 2 |
zero |
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Shorter GRE - Preparing for the Quantitative Reasoning Measure
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Shorter GRE - Preparing for the Quantitative Reasoning Measure
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Re: N is a positive integer
[#permalink]
20 Sep 2024, 03:30
20 Sep 2024, 03:30
1
N is a positive integer, N^2 - N = N(N - 1)
then A includes an odd and an even integer, product of an odd and an even integer is an even integer
=> remainder when (N^2 - N) / 2 is always 0
=> C
then A includes an odd and an even integer, product of an odd and an even integer is an even integer
=> remainder when (N^2 - N) / 2 is always 0
=> C
gmatclubot
Re: N is a positive integer [#permalink]
20 Sep 2024, 03:30
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