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Divisibility and Primes: If 6 is not a factor of d

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GMATTaker
 Post subject: Divisibility and Primes: If 6 is not a factor of d
 Post Posted: Sun Oct 19, 2008 1:33 am 
Just a quick question: For the problems in Divisibility and Primes,
do we have to assume that the terms in questions are always
integer?

For e.g. Q. 9 says: " If 6 is not a factor of d, is 12d divisible by 6" ?
The answer is YES (as per the explanation). But this is only if 'd' is an integer?
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StaceyKoprince
 Post subject:
 Post Posted: Tue Nov 04, 2008 1:15 pm 
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ManhattanGMAT Staff


Posts: 6064
Location: San Francisco
Look at the instructions at the top of that page. They say "all variables in problems #1 through #11 are assumed to be integers unless otherwise indicated." So, in this case, you are actually told that d is an integer.

On the test you should NOT assume anything. If they don't tell you something is an integer, then it doesn't have to be.

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Stacey Koprince
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