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

It is currently 02 Sep 2014, 04:07

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

Is x a negative number?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Affiliations: CFA Level 2 Candidate
Joined: 29 Jun 2009
Posts: 223
Schools: RD 2: Darden Class of 2012
Followers: 3

Kudos [?]: 54 [0], given: 2

GMAT Tests User
Is x a negative number? [#permalink] New post 10 Oct 2009, 14:01
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

28% (01:46) correct 72% (00:31) wrong based on 91 sessions
Is x a negative number?

(1) x^2 is a positive number.

(2) x*|y| is not a positive number.
[Reveal] Spoiler: OA

Last edited by Bunuel on 29 Dec 2013, 02:34, edited 1 time in total.
Edited the question and added the OA.
Manager
Manager
avatar
Joined: 11 Sep 2009
Posts: 129
Followers: 4

Kudos [?]: 171 [0], given: 6

GMAT Tests User
Re: Is X Negative? [#permalink] New post 10 Oct 2009, 14:40
The answer is E.

Statement 1: x^2 is a positive number.

x can either be positive or negative. Insufficient.

Statement 2: x*|y| is not a positive number.

There are two possible cases:

1st case: x*|y| < 0, therefore x must be negative.
2nd case: x*|y| = 0, therefore x or y can be zero, and this doesn't prove anything about x.

Therefore, insufficient.

Evaluating both Statements

We know that |x| > 0, and that x*|y| <= 0. If y is non-zero, X must be negative. However, if Y = 0, then it doesn't matter what X is. Insufficient.
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2501
Followers: 53

Kudos [?]: 500 [0], given: 19

GMAT Tests User
Re: Is X Negative? [#permalink] New post 10 Oct 2009, 21:32
hogann wrote:
Is x a negative number?

(1) x^2 is a positive number.

(2) x · |y| is not a positive number.


Does statement 1 add any additional info to the question?
_________________

Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html


GT

Manager
Manager
avatar
Joined: 11 Sep 2009
Posts: 129
Followers: 4

Kudos [?]: 171 [0], given: 6

GMAT Tests User
Re: Is X Negative? [#permalink] New post 10 Oct 2009, 22:04
GMAT TIGER wrote:
hogann wrote:
Is x a negative number?

(1) x^2 is a positive number.

(2) x · |y| is not a positive number.


Another flawed question.
Does statement 1 adds any additional info to the question?
Didi you get the question correctly from its source?
Source???


It lets us know that x is not equal to zero.
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2501
Followers: 53

Kudos [?]: 500 [0], given: 19

GMAT Tests User
Re: Is X Negative? [#permalink] New post 10 Oct 2009, 22:39
AKProdigy87 wrote:
GMAT TIGER wrote:
hogann wrote:
Is x a negative number?

(1) x^2 is a positive number.

(2) x · |y| is not a positive number.


Does statement 1 adds any additional info to the question?


It lets us know that x is not equal to zero.


Thanks.. That makes sense.
_________________

Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html


GT

Manager
Manager
User avatar
Joined: 04 Oct 2013
Posts: 77
Location: United States
Concentration: Finance, Leadership
GMAT 1: 590 Q40 V30
GPA: 3.98
WE: Project Management (Entertainment and Sports)
Followers: 4

Kudos [?]: 26 [0], given: 16

Re: Is X Negative? [#permalink] New post 29 Dec 2013, 02:26
is x>0?

1. x^2=positive.

NS. x could be both a positive number and a negative number.

2 x|y| is not a positive number

different scenarios unfold from this expression. x|y|= -ve number, 0, or a positive rational number.

case a) |y| is not zero and x is negative. The answer would be yes
b) if |y| is zero the value of x is concealed (x is either positive or negative).
c) x can be a positive rational number and |y| a positive integer or a positive rational number.
d) x can be a negative rational number and |y| zero.

NS

1+2) combining the informations provided doesn't help to define a clear answer.
NS and the answer is E.
_________________

Either suffer the pain of discipline, or suffer the pain of regret.

If my posts are helping you show some love awarding a kudos

Re: Is X Negative?   [#permalink] 29 Dec 2013, 02:26
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic If x is a negative number, what is the value of x? goodyear2013 1 29 Mar 2014, 15:05
8 Experts publish their posts in the topic If x and y are negative numbers, is x<y? nitin6305 4 13 Aug 2013, 10:44
Experts publish their posts in the topic if x and y are negative numbers, is x<y yezz 1 15 May 2013, 08:09
1 Experts publish their posts in the topic Is x a negative number? Bunuel 11 06 Aug 2012, 02:11
1 Is x a negative number? (1) x2 is a positive number. (2) x prinits 12 31 May 2009, 06:23
Display posts from previous: Sort by

Is x a negative number?

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.