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

It is currently 23 Oct 2014, 23:35

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 xy > z? 1). xyz=1 2). xyz^2 > 1

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 08 Aug 2005
Posts: 251
Followers: 1

Kudos [?]: 9 [0], given: 0

Is xy > z? 1). xyz=1 2). xyz^2 > 1 [#permalink] New post 27 Nov 2005, 02:52
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Is xy > z?

1). xyz=1
2). xyz^2 > 1
SVP
SVP
User avatar
Joined: 24 Sep 2005
Posts: 1898
Followers: 10

Kudos [?]: 110 [0], given: 0

Re: DS inequality [#permalink] New post 27 Nov 2005, 03:26
getzgetzu wrote:
Is xy > z?

1). xyz=1
2). xyz^2 > 1


1. x=1, y=2, x=1/2 ...xy>z? YES
x=y=1/2 , z= 4 ....xy>z? NO
--->insuff

2. xyz^2>1
x=y= 1, z= 2 ....xy>z? NO
x=2, y=5, z=1/3 .....xy>z? YES
--->insuff

1 and 2:
divide the 2nd inequality two sides by xyz , we have : z>1 ..xyz=1 ---> xy<1<z

--->suff

C.
SVP
SVP
User avatar
Joined: 05 Apr 2005
Posts: 1735
Followers: 3

Kudos [?]: 34 [0], given: 0

Re: DS inequality [#permalink] New post 27 Nov 2005, 12:09
i and ii alone are not suff.

from i and ii, z>1. if z>1, then xy must be <1. so xy is not greater than z.
Re: DS inequality   [#permalink] 27 Nov 2005, 12:09
    Similar topics Author Replies Last post
Similar
Topics:
Is |x|=y-z? (1) x+y=z (2) x<0 marshpa 7 28 Aug 2008, 12:07
is |x|=y-z ? 1. x+y=z 2. x<0 first we know that y-z=|x|, Nsentra 6 07 Oct 2006, 18:23
If 5x=3y=2z, is xyz>0? (1) (xyz)^2 is an integer (2) kevincan 11 01 Sep 2006, 08:02
xy>z? 1) xyz=1 2) xyz^2>1 pls, provide ur explanation foolbox 8 23 Apr 2006, 03:15
Is XY < Z? S1) xyz =1 S2) xy(z^2) =1 duttsit 6 01 Dec 2005, 15:50
Display posts from previous: Sort by

Is xy > z? 1). xyz=1 2). xyz^2 > 1

  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®.