vishwas.arora wrote:Problem:
If c is not equal to 0, is ab/c > 0 ?
(1) a^2bc^3 > 0
(2) ac < 0
OA after discussion.
Thanks
Vishwas
Determine what's being tested: this question is about POSITIVE VS. NEGATIVE.
Try different combinations of positive and negative values.
Look for combinations that satisfy both statements.
Let a=1, b=-1 and c=-1.
Statement 1: a²bc³ > 0.
1²(-1)(-1)³ > 0.
1 > 0.
Statement 2: ac < 0.
(1)(-1) < 0.
-1 < 0.
Both statements are satisfied.
Is ab/c > 0?
(1)*(-1) / (-1) > 0
1 > 0. Yes.
Let a=-1, b=1 and c=1.
Statement 1: a²bc³ > 0.
(-1)²(1)(1)³ > 0.
1 > 0.
Statement 2: ac < 0.
(-1)(1) < 0.
-1 < 0.
Both statements are satisfied.
Is ab/c > 0?
(-1)*(1) / (1) > 0
-1 > 0. No.
The correct answer is
E.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at
[email protected].
Student Review #1
Student Review #2
Student Review #3
