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# Is n an integer? S1. n/3 is an integer S2. 2n is an integer

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Manager
Joined: 04 Apr 2010
Posts: 89
Schools: UCLA Anderson
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Kudos [?]: 53 [0], given: 17

Is n an integer? S1. n/3 is an integer S2. 2n is an integer [#permalink]

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22 Jun 2010, 16:16
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(N/A)

Question Stats:

83% (01:15) correct 17% (00:24) wrong based on 34 sessions

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Is n an integer?
S1. n/3 is an integer
S2. 2n is an integer
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Math Expert
Joined: 02 Sep 2009
Posts: 39007
Followers: 7748

Kudos [?]: 106468 [0], given: 11626

Re: n/3 is an integer... [#permalink]

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22 Jun 2010, 21:35
Is n an integer?

(1) For $$\frac{n}{3}$$ to be an integer $$n$$ must be an integer --> $$\frac{n}{3}=integer$$ --> $$n=3*integer=integer$$. Sufficient.

(2) $$2n$$ is an integer --> $$n$$ may or may not be an integer, for instance $$n=0.5$$ or $$n=1$$. Not sufficient.

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Kudos [?]: 34 [0], given: 33

Re: n/3 is an integer... [#permalink]

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24 Jun 2010, 02:53
Yes....A it should be
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Re: n/3 is an integer...   [#permalink] 24 Jun 2010, 02:53
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