Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 350,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

when we combine both statements we get
numbers 12, 24 and so on.
the prime numbers of 4 are 2,2
the prime numbers of 6 are 2.3
therefore 2*2*3 and 2*2*2*3 are also multiples of this numbers.

The key to DS question is to eliminate the answer to a yes or no answer.

2) n is a multiple of six is insufficent.

because N could be 12, 18, 24.

Together are not sufficent because 12 is a multiple of both of 4 and 6 but it's not mutilple of 24. It tells you that N could be or could not be multiple of 24 = insufficient.

Re: is the positive integer n a multiple of 24? [#permalink]
17 Feb 2013, 19:02

buffett76 wrote:

DOES SOMEONE HAVE A GENERAL PROCEDURE TO SOLVE THIS AWFUL QUESTIONS?

is the positive integer n a multiple of 24?

1) n is a multiple of 4 2) n is a multiple of 6

i had the method of seing if the number in the question (24) has common prime factors with the multiples of n. in this case : 24= 2^3 * 3

4= 2*2 INSUFF 6= 3*2 SUFF BUT IN THIS CASE THIS METHOD HAS FAILED ME . OA= E

thank you!

Hello All,

Unfortunately I brought this question back from the dead (last update 2007!) because I am missing something fundamental here. I selected that both answer choices were sufficient because each answer choice provided a NO answer AND did not provide a YES answer.

1.) n is a multiple of 4 SUFFICIENT bc there are no 3s in the prime box 2.) n is a multiple of 6 SUFFICIENT bc there is not enough 2s in the prime box

Even if both are INSUFFICIENT, C would also work because we know that there are not enough factors in n's prime box... Is there an assumption I'm missing? Someone please, put me to shame! _________________

+1 Kudos if my comment was helpful. Thanks!

Failure forges confidence, and confidence cultivates success. Proving the answer choices wrong is almost better than calculating what is right.

Re: is the positive integer n a multiple of 24? [#permalink]
18 Feb 2013, 04:18

Expert's post

mejia401 wrote:

buffett76 wrote:

DOES SOMEONE HAVE A GENERAL PROCEDURE TO SOLVE THIS AWFUL QUESTIONS?

is the positive integer n a multiple of 24?

1) n is a multiple of 4 2) n is a multiple of 6

i had the method of seing if the number in the question (24) has common prime factors with the multiples of n. in this case : 24= 2^3 * 3

4= 2*2 INSUFF 6= 3*2 SUFF BUT IN THIS CASE THIS METHOD HAS FAILED ME . OA= E

thank you!

Hello All,

Unfortunately I brought this question back from the dead (last update 2007!) because I am missing something fundamental here. I selected that both answer choices were sufficient because each answer choice provided a NO answer AND did not provide a YES answer.

1.) n is a multiple of 4 SUFFICIENT bc there are no 3s in the prime box 2.) n is a multiple of 6 SUFFICIENT bc there is not enough 2s in the prime box

Even if both are INSUFFICIENT, C would also work because we know that there are not enough factors in n's prime box... Is there an assumption I'm missing? Someone please, put me to shame!

Is the positive integer n a multiple of 24?

(1) n is a multiple of 4. If n=4, then the answer is NO but if n=24, then the answer is YES. Not sufficient. (2) n is a multiple of 6. If n=6, then the answer is NO but if n=24, then the answer is YES.Not sufficient.

(1)+(2) n is a multiple of both 4 and 6 which means that it's a multiple of least common multiple of 4 and 6, which is 12. So, even taken together statements are not sufficient, since n can be for example 12 as well as 24. Not sufficient.

Answer: E.

Generally if a positive integer n is a multiple of positive integer a and positive integer b, then n is a multiple of LCM(a,b).

Hello everyone! Researching, networking, and understanding the “feel” for a school are all part of the essential journey to a top MBA. Wouldn’t it be great... ...

Booth allows you flexibility to communicate in whatever way you see fit. That means you can write yet another boring admissions essay or get creative and submit a poem...