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is k an integer

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Source: — Data Sufficiency |
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by bluementor » Tue May 05, 2009 3:18 am
Statement 1: n is an integer

if n =6, then k = 2 (integer). YES
if n =1, then k = 1/3 (non-integer). NO. Insufficient.

Statement 2: n/6 is an integer

n/6 = m (where m is an integer)
n = 6m

so,

6m = 3k
k = 2m

since m is an integer, 2m must be an integer. Sufficient.

Choose B


-BM-
Last edited by bluementor on Tue May 05, 2009 11:51 pm, edited 1 time in total.
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by success1111 » Tue May 05, 2009 7:27 pm
bluementor wrote:Statement 1: n is an integer

if n =3, then k = 2 (integer). YES

Thanks for your input. However, i think you wanted to say if n=6 not 3.
Trust but verify.
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by bluementor » Tue May 05, 2009 11:50 pm
success1111 wrote:
bluementor wrote:Statement 1: n is an integer

if n =3, then k = 2 (integer). YES

Thanks for your input. However, i think you wanted to say if n=6 not 3.
ah yes...sorry about the typo.

thanks. post has been edited.

-BM-
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by Uri » Wed May 06, 2009 8:52 am
great going, BM. seems you are in full flow :wink:
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