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126) Is A factor?

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Source: — Data Sufficiency |
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by rajeshsources » Thu May 13, 2010 4:59 am
I'm on B, Statement-2 is sufficient.

This is a YES/NO -- DATA SUFFICIENCY Question. In this type, we could conclude statement is sufficient once we have got UNIQUE answer(either YES or NO), then only we will consider the statement is SUFFICIENT.

Factors of 48 = 1,2,3,4,6,8,12,16,24,48.

Statement-1:
A is a factor of 36=1,2,3,4,6,9,12,18,36.
If A=6, then it is also a factor of 48.
If A=9, then it is not a factor of 48.
Hence, Statement-1 is not having UNIQUE answer(either YES or NO). -- NOT SUFFICIENT

Statement-2:
A is a factor of 24 = 1,2,3,4,6,12,24
Every factor of 24 is also a factor of 48.
Here we are getting UNIQUE answer(Only YES). ---- SUFFICIENT.

So, the correct answer is B

HTH, GOOD LUCK,

Thanks,
Rajesh,
Loves GMAT...!!!
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