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Is n an integer greater than 4?

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Intern
Joined: 24 Jan 2014
Posts: 7
Followers: 1

Kudos [?]: 6 [0], given: 7

Is n an integer greater than 4? [#permalink]

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08 May 2014, 08:40
11. Is n an integer greater than 4?
(1) 3n is a positive integer.
(2) n/3 is a positive integer.
Magoosh GMAT Instructor
Joined: 28 Dec 2011
Posts: 3519
Followers: 1188

Kudos [?]: 5306 [0], given: 58

Re: Is n an integer greater than 4? [#permalink]

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08 May 2014, 11:54
Ravithj wrote:
11. Is n an integer greater than 4?
(1) 3n is a positive integer.
(2) n/3 is a positive integer.

Dear Ravithj,
I'm happy to respond.

First of all, my friend, this post is wildly miscategorized. This question should be posed in the "quantitative section", with the other DS questions.

Because it's a simple question, I will answer.
Statement #1: From this first statement, it's not even guaranteed that n is an integer --- for example, n = 5/3 would work as possible value. But n could be an integer greater than 4, so from this statement, alone and by itself, we can draw no conclusion. Insufficient.
Statement #2: From this statement, we know that n must be an integer and a multiple of 3 --- n could be 3, 6, 9, 12, etc. Most of those are integers greater than 4, but 3 is less than 4. From this statement, alone and by itself, we can draw no conclusion. Insufficient.
Combined statements: Both n = 3 and n = 6 are consistent with both statements. The first gives a "no" answer to the prompt, and the second, a "yes" answer. Even with the information of both statements, we are not in a position to give a definitive answer to the prompt question. Both statements combined are Insufficient.

Here's a blog about GMAT Data Sufficiency tips:
http://magoosh.com/gmat/2013/gmat-data- ... ency-tips/

I hope all this helps.
Mike
_________________

Mike McGarry
Magoosh Test Prep

Re: Is n an integer greater than 4?   [#permalink] 08 May 2014, 11:54
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