It is currently 20 Jan 2018, 10:55

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If xy ≠ 0, is x/y < 0 ?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43335

Kudos [?]: 139576 [0], given: 12794

If xy ≠ 0, is x/y < 0 ? [#permalink]

Show Tags

New post 31 Dec 2017, 11:14
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

74% (00:45) correct 26% (01:33) wrong based on 31 sessions

HideShow timer Statistics

Kudos [?]: 139576 [0], given: 12794

Expert Post
1 KUDOS received
examPAL Representative
User avatar
B
Joined: 07 Dec 2017
Posts: 118

Kudos [?]: 21 [1], given: 3

Re: If xy ≠ 0, is x/y < 0 ? [#permalink]

Show Tags

New post 31 Dec 2017, 13:07
1
This post received
KUDOS
Expert's post
Bunuel wrote:
If xy ≠ 0, is x/y < 0 ?

(1) x^2/y^2 > 0

(2) x^2/y^3 > 0


We're asked if x and y have different signs so we'll look for an answer that gives us this information.
This is a Logical approach.

(1) Since the square of a non-zero number is always positive, then (1) is always true and gives us no information.
Insufficient!

(2) Since x^2 is always positive then y^3 must also be positive meaning that y is positive.
But, without knowledge of x, we cannot know if x/y < 0 or not.
Insufficient!

Combined, we know that y is positive but still have no information on x.
Insufficient!

(E) is our answer.
_________________

David
Senior tutor at examPAL
Signup for a free GMAT course
Image
Image

Kudos [?]: 21 [1], given: 3

1 KUDOS received
Intern
Intern
avatar
Joined: 16 Jan 2018
Posts: 3

Kudos [?]: 1 [1], given: 61

Re: If xy ≠ 0, is x/y < 0 ? [#permalink]

Show Tags

New post 18 Jan 2018, 09:46
1
This post received
KUDOS
But OA is B?
I chose E too.

Somebody explain.

Kudos [?]: 1 [1], given: 61

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43335

Kudos [?]: 139576 [0], given: 12794

Re: If xy ≠ 0, is x/y < 0 ? [#permalink]

Show Tags

New post 18 Jan 2018, 10:09

Kudos [?]: 139576 [0], given: 12794

Re: If xy ≠ 0, is x/y < 0 ?   [#permalink] 18 Jan 2018, 10:09
Display posts from previous: Sort by

If xy ≠ 0, is x/y < 0 ?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


cron

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.