It is currently 20 Oct 2017, 15:16

### 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 a negative number? statement 1: x^2 is a positive

Author Message
Manager
Joined: 22 Feb 2009
Posts: 136

Kudos [?]: 149 [0], given: 10

Schools: Kellogg (R1 Dinged),Cornell (R2), Emory(Interview Scheduled), IESE (R1 Interviewed), ISB (Interviewed), LBS (R2), Vanderbilt (R3 Interviewed)
Is X a negative number? statement 1: x^2 is a positive [#permalink]

### Show Tags

15 Mar 2009, 09:58
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is X a negative number?

statement 1: x^2 is a positive number
statement 2: x*lyl is not a positive number

Kudos [?]: 149 [0], given: 10

Director
Joined: 04 Jan 2008
Posts: 893

Kudos [?]: 747 [0], given: 17

### Show Tags

15 Mar 2009, 11:23
(1)--->x=+ve or -ve number(Any number even decimal)-INSUFF
(2)--->x could be 0 or Negative Number--INSUFF
Combining we get x-->Negative Number--SUFF
IMO C
bandit wrote:
Is X a negative number?

statement 1: x^2 is a positive number
statement 2: x*lyl is not a positive number

_________________

http://gmatclub.com/forum/math-polygons-87336.html
http://gmatclub.com/forum/competition-for-the-best-gmat-error-log-template-86232.html

Kudos [?]: 747 [0], given: 17

Manager
Joined: 22 Feb 2009
Posts: 136

Kudos [?]: 149 [1], given: 10

Schools: Kellogg (R1 Dinged),Cornell (R2), Emory(Interview Scheduled), IESE (R1 Interviewed), ISB (Interviewed), LBS (R2), Vanderbilt (R3 Interviewed)

### Show Tags

15 Mar 2009, 12:02
1
KUDOS
nitya34 wrote:
(1)--->x=+ve or -ve number(Any number even decimal)-INSUFF
(2)--->x could be 0 or Negative Number--INSUFF
Combining we get x-->Negative Number--SUFF
IMO C
bandit wrote:
Is X a negative number?

statement 1: x^2 is a positive number
statement 2: x*lyl is not a positive number

I thought so ... but its not the OA. Its E.... Can any one explain?

Kudos [?]: 149 [1], given: 10

Director
Joined: 04 Jan 2008
Posts: 893

Kudos [?]: 747 [0], given: 17

### Show Tags

15 Mar 2009, 12:13
OA could be wrong also
whats the source?I have seen this Q,somewhere
_________________

http://gmatclub.com/forum/math-polygons-87336.html
http://gmatclub.com/forum/competition-for-the-best-gmat-error-log-template-86232.html

Kudos [?]: 747 [0], given: 17

Manager
Joined: 22 Feb 2009
Posts: 136

Kudos [?]: 149 [0], given: 10

Schools: Kellogg (R1 Dinged),Cornell (R2), Emory(Interview Scheduled), IESE (R1 Interviewed), ISB (Interviewed), LBS (R2), Vanderbilt (R3 Interviewed)

### Show Tags

15 Mar 2009, 20:39
well I think the OA is correct. because, even if you combine (1) and (2), the 2nd statement can be -ve or 0 ( (lyl) can be 0, isn't it?). Therefore E

Kudos [?]: 149 [0], given: 10

Manager
Joined: 02 Mar 2009
Posts: 134

Kudos [?]: 55 [0], given: 0

### Show Tags

15 Mar 2009, 23:01
I got C too.

If we combine both of them, we know that x has to be a number other than 0 becuase the first statemetn says x^2 is positive. It cannot be 0. The second statement tells us that it is 0 or negative. Combining both tells us that x is negative.

Which book is the question from?

Kudos [?]: 55 [0], given: 0

Senior Manager
Joined: 12 Mar 2009
Posts: 308

Kudos [?]: 453 [0], given: 1

### Show Tags

16 Mar 2009, 06:28
Is X a negative number?

statement 1: x^2 is a positive number
statement 2: x*lyl is not a positive number

Statement A: cant answer as X can be +ve or -ve.
Statement B: x* mod y is not a positive number. That means it can be either -ve or 0.
Then, mod y can be,
1. -ve (it cant be as it is mod)
2. 0

x can be:
1. -ve
2. 0

We can not find the ans even using the above statements, hence E. Hope this helps.

Kudos [?]: 453 [0], given: 1

Director
Joined: 04 Jan 2008
Posts: 893

Kudos [?]: 747 [0], given: 17

### Show Tags

16 Mar 2009, 09:30
vaivish1723 wrote:
Is X a negative number?

statement 1: x^2 is a positive number
statement 2: x*lyl is not a positive number

Statement A: cant answer as X can be +ve or -ve.---OKAYStatement B: x* mod y is not a positive number. That means it can be either -ve or 0.
Then, mod y can be,
1. -ve (it cant be as it is mod)-->YOU MEAN +VE as MODULUS can only be +VE
2. 0

x can be:
1. -ve(HOW?)2. 0

We can not find the ans even using the above statements, hence E. Hope this helps.

How?Because x can ONLY be +VE
_________________

http://gmatclub.com/forum/math-polygons-87336.html
http://gmatclub.com/forum/competition-for-the-best-gmat-error-log-template-86232.html

Kudos [?]: 747 [0], given: 17

Re: DS question..   [#permalink] 16 Mar 2009, 09:30
Display posts from previous: Sort by