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Source: — Data Sufficiency |
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by iamseer » Sat May 08, 2010 10:48 pm
from 1:
3n/7 is an integer

3 is not a multiple of 7. So, n has to be a multiple of 7

therefore n/7 will be an integer.
Sufficient

from 1:
5n/7 is an integer

5 is not a multiple of 7. So, n has to be a multiple of 7

therefore n/7 will be an integer.
Sufficient

IMO answer D
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by gmatmachoman » Sun May 09, 2010 4:06 am
Good work Seer Bhai...!!
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