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Issues on Number Properties in Data Sufficiency

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Joined: 04 Jul 2017
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Issues on Number Properties in Data Sufficiency  [#permalink]

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New post 19 Jul 2017, 08:37
Hi,

I have a lot of problems answering Number Properties questions but only in Data Sufficiency. Number Properties PS is not my strength but I am not struggling there as I am in DS. Is there any advice as to how to tackle Number Properties in Data Sufficiency?

Kind regards,
Andrés
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Re: Issues on Number Properties in Data Sufficiency  [#permalink]

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New post 19 Jul 2017, 18:11
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Hi Andres,

Every Number Property rule that you will ever see on the GMAT can be dealt with by TESTing VALUES. That approach will often lead you directly to the correct answer OR help you to define the pattern(s) involved in the question so that you can answer the question in some other way. So while you can certainly memorize all of the common Number Property rules that could show up on the GMAT, you can also deal with them in a relatively fast and practical way on a case-by-case basis.

Here's a simple example: What happens when you multiply any two ODD numbers together? You don't have to memorize this information - just prove it, right now... (hint: TEST VALUES)?

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Re: Issues on Number Properties in Data Sufficiency  [#permalink]

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New post 20 Jul 2017, 02:12
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asanchezb wrote:
Hi,

I have a lot of problems answering Number Properties questions but only in Data Sufficiency. Number Properties PS is not my strength but I am not struggling there as I am in DS. Is there any advice as to how to tackle Number Properties in Data Sufficiency?

Kind regards,
Andrés


With number properties questions, I often like to think of the number line. It reminds me that numbers behave differently "between 0 and 1", "between -1 and 0", "less than -1" and "more than 1". It also reminds me that integers only occur at regular intervals and there are infinite numbers in between them. Also, that 0, 1 and -1 are special numbers.
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Re: Issues on Number Properties in Data Sufficiency   [#permalink] 20 Jul 2017, 02:12
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