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:

in statement 1 we know that Z is a positive integer so there is no way Z=-3, the only solution is that Z is equal to any positive number but that X=0 so XZ=0 -> suff

in statement 2, Z could be for example 3 and X could also be 3. Not suff

a good one, i am not so sure, I would answer A in statement 1 we know that Z is a positive integer so there is no way Z=-3, the only solution is that Z is equal to any positive number but that X=0 so XZ=0 -> suff. in statement 2, Z could be for example 3 and X could also be 3. Not suff

If Z is a positive integer, x*z=0?
1) x*z=-3x
2) x*z=3x

Answer should be A, but this is one of the poorly worded question because it is not possible to have x*z=-3x = 3x without combining i and ii. to satisfy booth statement x must be o and ETS doesnot ask such question. only after combining both, we know that x = o. therefore no wonder if OA is C.

a good one, i am not so sure, I would answer A in statement 1 we know that Z is a positive integer so there is no way Z=-3, the only solution is that Z is equal to any positive number but that X=0 so XZ=0 -> suff. in statement 2, Z could be for example 3 and X could also be 3. Not suff

If Z is a positive integer, x*z=0? 1) x*z=-3x 2) x*z=3x

Answer should be A, but this is one of the poorly worded question because it is not possible to have x*z=-3x = 3x without combining i and ii. to satisfy booth statement x must be o and ETS doesnot ask such question. only after combining both, we know that x = o. therefore no wonder if OA is C.

I'm not so sure it's a bad question. Certainly it's confusing. But if * is a special function, then we don't know anything about the relationship of x and z. Maybe from one we could learn that * means "lose z and multiply by negative 3".

Either way, with C we see that 3x = -3x, and only zero could make that work.

If z is positive, the only way x*z can be 0 is for x to be 0. So the question is really asking Is x 0?

(1) x*z = -3x --> tells us x = -x since z is positive. So x must be 0. Sufficient.
(2) z=3. Doesn't really tells us anything. x can be 0 and x*z = 3x. Or x can be any value and still satisfy statement 2.

If z is positive, the only way x*z can be 0 is for x to be 0. So the question is really asking Is x 0?

(1) x*z = -3x --> tells us x = -x since z is positive. So x must be 0. Sufficient. (2) z=3. Doesn't really tells us anything. x can be 0 and x*z = 3x. Or x can be any value and still satisfy statement 2.

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... ...

Are you interested in applying to business school? If you are seeking advice about the admissions process, such as how to select your targeted schools, then send your questions...

A lot of readers have asked me what benefits the Duke MBA has brought me. The MBA is a huge upfront investment and the opportunity cost is high. Most...