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 500,000 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 the question it is not mentioned that m is not equal to n If m=n=5 then the ratio is indefinite! Hence 2 is not suffucient and we need 1 to solve this (just to make sure that m<>n)
In the question it is not mentioned that m is not equal to n If m=n=5 then the ratio is indefinite! Hence 2 is not suffucient and we need 1 to solve this (just to make sure that m<>n)
Any comments?
M and N can't be equal because division by 0 would occur. Answer is B.
I do not remmember the source, but ETS does not take the x/0 equation at anytime. As this will lead to infinity (anything by zero is not valid). Hence, the above answer B is valid.
Perhaps, others can put some info they have obtained. _________________
I was inclined to go ahead and put down 'B' for answer, but then I thought of testing possible values for m and n in (m^2-n^2) = 40
(m+n)(m-n) = 40
the only values I could come up with are:
(7+3)(7-3)=40
thisquestion is from ETS official guide 10 th edition
Folks,
I also chose C because of the m<>n thing
But OA is B
I guess the Q is poorly framed;
In most cases Qs clearly mention "m<>n" in cases where divide by zero is a possibility
The source of this Qusetion and Answer is from internet.
Rahul, If this Q is in OG, could you please check and tell us what the OA is in ETS OG?