If n is a prime number greater than 3, what is the remainder when n is divided by 12?
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n can be 5, 7, 11, 13, 17, 23, 29 etc which give remainders 5, 7, 11, 1, 5, 11, 5 etc.

Since 7 and 11 are not there in the options these are eliminated, but aren't 1 (13/12) and 5 (5/12, 17/12, 20/12) both possible answers.

The answer given is (B) i.e. 1. Isn't this ques errornous... but its an actual GMAT question from a retired paper test available on mba.com
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Rahul,

The question, as written, is definitely erroneous. The remainder when dividing a prime > 2 by 12 could be 1 (n=13), 5 (n=17), 7 (n=31), or 11 (n=23). The remainder could not be even (since n, by definition, cannot be even), and it could not be 3 or 9 (since 12 is a multiple of 3, n would have to be a multiple of 3 to yield a remainder of 3 or 9). Additionally, the phrasing "what is the remainder?" on the GMAT would indicate that there is only one possible remainder. We cannot simply "eliminate" 7 and 11 because they are not offered as answer choices.

Either the question has a misprint (most likely), you have read and copied it incorrectly (unlikely), or both you and I have lost all our GMAT senses (actually, at least as far as I am concerned, quite possible!)

-dan

Rahul,

I contacted my anonymous sources deep inside the covert GIA (GMAT Intelligency Agency), and was informed that the original question asked What is the remainder when n^2 is divided by 12?

-dan

ps If anyone asks you, both this email and I do not exist :)

Thanks a lot Dan, like always you have been a great help. I checked and rechecked the question, its a misprint says "n" instead of "n^2".

Would like to meet your sources though ...haha?

Take care and thanx again.

Also, I wanted to ask, does Manahattan have admission counselling services like Princeton review or Kaplans. And also will these services be available in India?

Currently, Manhattan GMAT is solely focues on helping our students achieve their goal scores (or better!) on the GMAT. We do periodically work or co-sponsor events with certain MBA admissions consultancies, but I'm uncertain which ones provide international services (though my assumption is that most do). For specific suggestions/recommendations you might send a post to "student services," "ask an admissions consultant," or "business schools." My guess is someone who views your post will be more knowledgeable than I about specific consulting firms.

-dan