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Manhattan Gmat question

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by thephoenix » Fri Apr 23, 2010 5:09 am
imo c
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by ajith » Fri Apr 23, 2010 5:25 am
nisha.menon294 wrote:If x and y are positive integers, which of the following CANNOT be the greatest common divisor of 35x and 20y?

1)5
2)5(x - y)
3)20x
4)20y
5)35x

1) possible when x=1 and y=1
2) possible when x=3 and y =2
4) Possible when x=20 and y=35
5) Possible when x=20 and y =35

So by elimination, I come to answer 3.
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by akhpad » Fri Apr 23, 2010 7:17 am
I agree with C
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