VJesus12 wrote:Is x > y?
(1) x^2 > y
(2) x - |y| > 0
The OA is the option B .
Why is the statement (1) not sufficient? Experts, can you give me an example? Please.
(1) x^2 > y
If x is positive, then x > y; however, if x is negative, then x < y. Insufficient.
Case 1: x = 2 and y = 1, then x > y, and 2^2 > 1 => 4 > 1. The answer is Yes.
Case 2: x = -2 and y = 1, then x < y, and (-2)^2 > 1 => 4 > 1. The answer is No.
(2) x - |y| > 0
x > |y|
Since |y| is positive, x is positive. Whether y is negative or positive, x > y. Sufficient.
The correct answer:
B
Hope this helps!
-Jay
_________________
Manhattan Review GMAT Prep
Locations:
Beijing |
Copenhagen |
Oslo |
Lisbon | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor!
Click here.
