Find all School-related info fast with the new School-Specific MBA Forum

It is currently 27 Mar 2015, 20:18

Close

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
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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

DS-Modulus

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Status: Its Wow or Never
Joined: 11 Dec 2009
Posts: 208
Location: India
Concentration: Technology, Strategy
GMAT 1: 670 Q47 V35
GMAT 2: 710 Q48 V40
WE: Information Technology (Computer Software)
Followers: 6

Kudos [?]: 65 [0], given: 7

DS-Modulus [#permalink] New post 05 Jul 2011, 01:46
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 1 sessions
can somebody please explain this.Looks a very easy question but i am confused about the OE given.
Is x > y?

(1) x^2 > y

(2) x – |y| > 0
[Reveal] Spoiler: OA

_________________

---------------------------------------------------------------------------------------
If you think you can,you can
If you think you can't,you are right.

Expert Post
Veritas Prep GMAT Instructor
User avatar
Joined: 16 Oct 2010
Posts: 5352
Location: Pune, India
Followers: 1298

Kudos [?]: 6501 [0], given: 174

Re: DS-Modulus [#permalink] New post 05 Jul 2011, 02:18
Expert's post
mojorising800 wrote:
can somebody please explain this.Looks a very easy question but i am confused about the OE given.
Is x > y?

(1) x^2 > y

(2) x – |y| > 0



Statement 1 is clearly not sufficient alone. Only if we know that x > x^2, will we get a definite answer. But x > x^2 only when x lies between 0 and 1 which is not given. So statement 1 is not sufficient.

Statement 2 tells you that x > |y|. This means x is greater than the absolute value of y. Then x has to be greater than y too.
Think about it: |y| is either equal to y (when y is +ve or 0) or it is greater than y (when y is negative). So if x is greater than |y|, it has to be greater than y too.

You can also take an example to understand this.
Say y = -4
Given x > |y| i.e. x > 4
Then x has to be greater than -4 too.
Say y = 4
Given x > |y| i.e. x > 4
In either case, x has to be greater than y.
So statement 2 alone is sufficient.
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Veritas Prep GMAT course is coming to India. Enroll in our weeklong Immersion Course that starts March 29!

Veritas Prep Reviews

Forum Moderator
Forum Moderator
User avatar
Status: waiting for good news
Joined: 02 Jul 2009
Posts: 1360
GPA: 3.77
Followers: 166

Kudos [?]: 604 [0], given: 597

GMAT ToolKit User Premium Member Reviews Badge
Re: DS-Modulus [#permalink] New post 05 Jul 2011, 02:49
mojorising800 wrote:
can somebody please explain this.Looks a very easy question but i am confused about the OE given.
Is x > y?

(1) x^2 > y

(2) x – |y| > 0



The best way is to test cases.

1) take x=-2, y=1 and x=2 , y=1. NS

2) rewrite it , so x>|y|
in this case x is positive , so x>0 , thus in any case of y whether positive or negative x>y.
_________________

Audaces fortuna juvat!

GMAT Club Premium Membership - big benefits and savings

Re: DS-Modulus   [#permalink] 05 Jul 2011, 02:49
Display posts from previous: Sort by

DS-Modulus

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.