NEW HERE? LEARN MORE
closeclose
Last visit was: 23 Apr 2024, 11:57 It is currently 23 Apr 2024, 11:57
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

Is |x| > |y| ? (1) x^2 > y^2 (2) x > y

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
xALIx
Manager
Manager
Joined: 02 Aug 2007
Posts: 136
Own Kudos [?]: 220 [8]
Given Kudos: 0
Schools:Life
Send PM
Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   Updated on: 08 May 2022, 02:27
1
Kudos
7
Bookmarks
00:00
A
B
C
D
E

Difficulty:

15% (low)

Question Stats:

72% (01:02) correct 28% (01:14) wrong based on 356 sessions
Hide Show timer Statistics
Is |x| > |y| ?

(1) x^2 > y^2
(2) x > y
ShowHide Answer
Official Answer
A

Originally posted by xALIx on 19 Jan 2009, 16:45.
Last edited by Bunuel on 08 May 2022, 02:27, edited 4 times in total.
Renamed the topic, edited the question and added the OA.
User avatar
GMAT TIGER
VP
VP
Joined: 29 Aug 2007
Posts: 1021
Own Kudos [?]: 1726 [3]
Given Kudos: 19
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   19 Jan 2009, 20:15
2
Kudos
1
Bookmarks
x-ALI-x wrote:
Is |x| > |y| ?

1) \(x^2 > y^2\)
2) x > y


A.
1: since x^2 and y^2 both are +ve, lxl>lyl is true. suff..
2: when x>y, x could be 1 and y = -10, or x = 10 and y = -1. insuff.
User avatar
graduateprofessor
Intern
Intern
Joined: 19 Jan 2009
Posts: 7
Own Kudos [?]: 4 [1]
Given Kudos: 0
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   19 Jan 2009, 23:03
1
Bookmarks
stmnt 1 : x^2 > y ^2 implies absolute value of x > absolute value of y ...sufficient.

stmnt 2: x > y if x and y both positive it gives an answer yes.
If x is positive and y negative it gives an answer No.
if x and y both negative it gives an answer No.
insufficient.


so answer is A.

www.graduatetutor.com
User avatar
L
IanStewart
GMAT Tutor
Joined: 24 Jun 2008
Posts: 4128
Own Kudos [?]: 9238 [2]
Given Kudos: 91
 Q51  V47
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   20 Jan 2009, 06:28
2
Kudos
Expert Reply
graduateprofessor wrote:

stmnt 2: x > y if x and y both positive it gives an answer yes.
If x is positive and y negative it gives an answer No.
if x and y both negative it gives an answer No.
insufficient.


That's not quite right. If x is positive and y is negative, it gives the answer 'Maybe', not 'No'. If x = 5, y = -2, then x > y and |x| > |y|. If x = 2 and y = -5, then x > y and |x| < |y|.

That doesn't affect the answer in this case, but it would be important if the question had told us, for example, that xy < 0.
User avatar
xALIx
Manager
Manager
Joined: 02 Aug 2007
Posts: 136
Own Kudos [?]: 220 [0]
Given Kudos: 0
Schools:Life
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   25 Jan 2009, 18:26
GMAT TIGER wrote:
since x^2 and y^2 both are +ve, lxl>lyl


This seems to be a rule that can be used repeatedly.
For example:
x^2 = 36
y^2 = 25
since we're only looking at the absolute value, therefore: 6 > 5. So, lxl>lyl.

Thoughts?
User avatar
AdrianPeterson
Intern
Intern
Joined: 24 Jan 2009
Posts: 10
Own Kudos [?]: 2 [0]
Given Kudos: 0
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   26 Jan 2009, 16:08
GMAT TIGER wrote:
x-ALI-x wrote:
Is |x| > |y| ?

1) \(x^2 > y^2\)
2) x > y


A.
1: since x^2 and y^2 both are +ve, lxl>lyl is true. suff..
2: when x>y, x could be 1 and y = -10, or x = 10 and y = -1. insuff.


I guess I could be making a really stupid question, but i've never seen the notation +ve. What does it stand for?
User avatar
x2suresh
Director
Director
Joined: 07 Nov 2007
Posts: 718
Own Kudos [?]: 3077 [0]
Given Kudos: 5
Location: New York
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   26 Jan 2009, 19:18
AdrianPeterson wrote:
GMAT TIGER wrote:
x-ALI-x wrote:
Is |x| > |y| ?

1) \(x^2 > y^2\)
2) x > y


A.
1: since x^2 and y^2 both are +ve, lxl>lyl is true. suff..
2: when x>y, x could be 1 and y = -10, or x = 10 and y = -1. insuff.


I guess I could be making a really stupid question, but i've never seen the notation +ve. What does it stand for?


+ve = positive
-ve = negative
User avatar
prateekbhatt
Director
Director
Joined: 28 Jun 2011
Status:My Thread Master Bschool Threads-->Krannert(Purdue),WP Carey(Arizona),Foster(Uwashngton)
Posts: 769
Own Kudos [?]: 277 [0]
Given Kudos: 57
Send PM
GMAT ToolKit User Reviews Badge
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   16 Oct 2011, 14:11
looks like a 500 level ques....IMO a
User avatar
L
akela
VP
VP
Joined: 30 Jan 2016
Posts: 1232
Own Kudos [?]: 4555 [0]
Given Kudos: 128
Send PM
Reviews Badge
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   14 Sep 2016, 23:44
x^2 > y^2 . Squaring both sides gives |x| > |y|
User avatar
G
Basshead
Director
Director
Joined: 09 Jan 2020
Posts: 967
Own Kudos [?]: 223 [0]
Given Kudos: 434
Location: United States
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   29 Oct 2020, 10:56
Is |x| > |y| ?

(1) \(x^2 > y^2\)

Absolute value of x > y. Sufficient.

(2) x > y

We can't conclude anything with this statement. For example:

let x = -4 y = -5

\(-4 > -5\)
\(|4| < |5| \)

Answer is A.
User avatar
bumpbot
Non-Human User
Joined: 09 Sep 2013
Posts: 32628
Own Kudos [?]: 821 [0]
Given Kudos: 0
Send PM
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink] New post   17 Feb 2023, 04:33
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.
GMAT Club Bot
gmatclubot
Re: Is |x| > |y| ? (1) x^2 > y^2 (2) x > y [#permalink]
17 Feb 2023, 04:33
Moderator:
Bunuel
Math Expert
92881 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions