It is currently 24 Feb 2018, 15:27

### GMAT Club Daily Prep

#### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Is x greater than y?

Author Message
TAGS:

### Hide Tags

Intern
Joined: 21 Sep 2011
Posts: 11
GMAT 1: 650 Q50 V29
Is x greater than y? [#permalink]

### Show Tags

29 Oct 2011, 09:00
1
KUDOS
2
This post was
BOOKMARKED
00:00

Difficulty:

55% (hard)

Question Stats:

59% (01:11) correct 41% (01:23) wrong based on 111 sessions

### HideShow timer Statistics

Is x greater than y?

(1) x - y^2 >0
(2) xy < 0
[Reveal] Spoiler: OA

Last edited by Bunuel on 01 Sep 2015, 03:30, edited 1 time in total.
Renamed the topic and edited the question.
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 1945
Re: Is x greater than y? [#permalink]

### Show Tags

29 Oct 2011, 09:20
3
KUDOS
1
This post was
BOOKMARKED
shirley916 wrote:
Is x greater than y?

1) x- y^2 >0
2) xy<0

1)
x>y^2
x=0.4; y=0.5; y^2=0.25; x>y^2, but x<y
x=2; y=1; y^2=1; x>y^2, and x>y
Not Sufficient.

2)
xy<0
Either x or y is -ve, but we don't know which one.
Not Sufficient.

Using both;
x>y^2; means, x can't be -ve because square is always greater than equal to 0.
y=-ve;
x=+ve.
Sufficient.

Ans: "C"
_________________
Director
Joined: 27 Jun 2011
Posts: 877
Re: Is x greater than y? [#permalink]

### Show Tags

29 Oct 2011, 12:49
Senior Manager
Status: MBAing!!!!
Joined: 24 Jun 2011
Posts: 286
Location: United States (FL)
Concentration: Finance, Real Estate
GPA: 3.65
WE: Project Management (Real Estate)
Re: Is x greater than y? [#permalink]

### Show Tags

29 Oct 2011, 15:07
I picked E but I see why C is correct...Nice explanation fluke.
Manager
Joined: 19 Oct 2011
Posts: 81
Re: Is x greater than y? [#permalink]

### Show Tags

30 Oct 2011, 14:13
shirley916 wrote:
Is x greater than y?

1) x- y^2 >0
2) xy<0

i think the answer is A but not sure...

the official answer from the study guide is C

from 1, we know that x>y^2, but we don't know whether y<y^2, because if 0<y<1, then the reverse is true.

But combined with 2, we know that x, y must be a positive and a negative, and if x>y^2, then x must be positive, and a positive is greater than a negative.

So, it's C
Non-Human User
Joined: 09 Sep 2013
Posts: 13759
Re: Is x greater than y? [#permalink]

### Show Tags

24 Feb 2017, 14:55
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Is x greater than y?   [#permalink] 24 Feb 2017, 14:55
Display posts from previous: Sort by