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Master | Next Rank: 500 Posts
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by khurram » Wed May 28, 2008 6:56 am
Why cannot the ans be C.

OA is E

Factor of 30 and 12, common one is only 3 so one ans.

Thanks
Khurram
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Source: — Data Sufficiency |
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by Carlo75 » Wed May 28, 2008 7:19 am
12= 2*6
30= 5*6

They share also 6 as a factor.
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by Nightwish » Wed May 28, 2008 7:52 am
If we list the numbers that will satisfy k, we have

3, 4, 5, 6, 7

1) Statement 1:

K is a factor of 30

Therefore K could be 3, 5, 6 – Insufficient

2) Statement 2:

K is a factor of 12

Therefore K could be 3, 4, 6 – Insufficient

3) Combine Statement 1 and 2

Therefore K could be 3 and 6 – Insufficient

And Hence the answer is E
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by khurram » Wed May 28, 2008 8:04 am
I get it

Stupid on my part. I was just considering the prime and not the factors, which can be any combinations with the primces.

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Khurram
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