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

It is currently 16 Apr 2014, 17:17

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

M18, Q30 - Test Error? Or me?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
Joined: 29 Jul 2009
Posts: 17
Followers: 0

Kudos [?]: 5 [0], given: 6

M18, Q30 - Test Error? Or me? [#permalink] New post 26 Oct 2009, 21:46
Is XY > X/Y

1. 0<Y<1

2. XY>1

OA
[Reveal] Spoiler:
C


My Answer, which I cant understand to be wrong
[Reveal] Spoiler:
A. XY>X/Y can be converted to Y^2>1. Statement 1 tells us that Y is a fraction and a fraction squared can never be greater than 1 (Y^2>1), so I concluded the answer "No", marking A as the correct answer. Can anybody explain what I did wrong?
1 KUDOS received
Senior Manager
Senior Manager
User avatar
Joined: 20 Mar 2008
Posts: 457
Followers: 1

Kudos [?]: 54 [1] , given: 5

GMAT Tests User
Re: M18, Q30 - Test Error? Or me? [#permalink] New post 26 Oct 2009, 22:15
1
This post received
KUDOS
dpgxxx wrote:
Is XY > X/Y

1. 0<Y<1

2. XY>1

OA
[Reveal] Spoiler:
C


My Answer, which I cant understand to be wrong
[Reveal] Spoiler:
A. XY>X/Y can be converted to Y^2>1. Statement 1 tells us that Y is a fraction and a fraction squared can never be greater than 1 (Y^2>1), so I concluded the answer "No", marking A as the correct answer. Can anybody explain what I did wrong?


XY>X/Y cannot be converted to Y^2>1. In an inequality, unless you know the sign -- in this case, of x, you cannot cancel the x on both sides.

In this case: if x>0
Y^2 > 1.

But if, x<0
then, Y^2 < 1.
Intern
Intern
Joined: 29 Jul 2009
Posts: 17
Followers: 0

Kudos [?]: 5 [0], given: 6

Re: M18, Q30 - Test Error? Or me? [#permalink] New post 27 Oct 2009, 00:21
I can't believe I never considered that. Thank you so much! Kudos +1
Founder
Founder
User avatar
Status: In Mexico.... NO PM's :-)
Affiliations: UA-1K, SPG-G, HH-D
Joined: 04 Dec 2002
Posts: 11815
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
WE: Information Technology (Hospitality and Tourism)
Followers: 1978

Kudos [?]: 6402 [0], given: 3564

GMAT ToolKit User Premium Member CAT Tests
Re: M18, Q30 - Test Error? Or me? [#permalink] New post 27 Oct 2009, 01:05
Expert's post
Welcome to GMAT Club tests :lol:

Would recommend you print this out and save in your error log or folder you keep for all similar types of issues.
_________________

Founder of GMAT Club

Just starting out with GMAT? Start here... | Want to know your GMAT Score? Try GMAT Score Estimator
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Have a blog? Feature it on GMAT Club!

Re: M18, Q30 - Test Error? Or me?   [#permalink] 27 Oct 2009, 01:05
    Similar topics Author Replies Last post
Similar
Topics:
New posts gmatclub test question M18, Q39 : ST sanjay_gmat 1 19 Mar 2009, 02:37
New posts GMAT Test M18 Master Thread - All discussions timetrader 0 12 May 2009, 23:11
New posts Does test m#18 have problem? pmal04 0 28 Jun 2009, 09:27
New posts Contents of the GMAT Club test m18-m24 honkergirl 2 29 Jun 2010, 11:41
New posts 1 GMAT CLUB TEST m18 - question 15 WithHopesToWin 5 22 Jul 2010, 15:14
Display posts from previous: Sort by

M18, Q30 - Test Error? Or me?

  Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: Bunuel, WoundedTiger



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®.