Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 21 May 2013, 23:52
Customize  |  Hide

Search
Register
New posts
Unanswered

DS 6

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
SVP
SVP
User avatar
Joined: 16 Oct 2003
Posts: 1957
Followers: 2

Kudos [?]: 14 [0], given: 0

GMAT Tests User
DS 6 [#permalink] New post 26 May 2004, 20:20
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Explainations please...
Attachments

d3.JPG
d3.JPG [ 6.19 KiB | Viewed 298 times ]

SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1963
Location: NewJersey USA
Followers: 3

Kudos [?]: 25 [0], given: 0

GMAT Tests User
 [#permalink] New post 26 May 2004, 20:59
A) xyz > 0 if y = -1 z = 1 and x = -1 then xyz > 0 but x(y+z) = 0 (Insufficient)
B) yz > 0 y = -1, z = -1 yz = 1 > 0 if x = 1 then xyz = 1 > 0 but if x = -1 then xyz < 0 (Insufficient)

Combine these make y = -1 z = -2 then x has to be +ve because xyz > 0
Let x = 1 1(-1+-2) = -3
if y = 1 x = 2 and x = 1 then 1(1+2) = 3
(Insufficient)

E is the answer.
Director
Director
User avatar
Joined: 05 May 2004
Posts: 602
Location: San Jose, CA
Followers: 1

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

GMAT Tests User
Re: DS 6 [#permalink] New post 28 May 2004, 18:12
Bhai wrote:
Explainations please...


Ans: E

yz>0
xyz>0
which means x is positive
but y,z can be either positive or negative!
Manager
Manager
User avatar
Joined: 07 May 2004
Posts: 184
Location: Ukraine, Russia(part-time)
Followers: 2

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

GMAT Tests User
Re: DS 6 [#permalink] New post 29 May 2004, 03:30
Bhai wrote:
Explainations please...


1 and 2 together are not sufficient, because

x = 1, y = -2, z = -3 satisfy 1 and 2 but do not satisfy x(y+z)>0.
Intern
Intern
User avatar
Joined: 26 Jan 2003
Posts: 28
Location: Reality
Followers: 1

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

Re: DS 6 [#permalink] New post 29 May 2004, 12:36
Bhai wrote:
Explainations please...


(2) y>0, z>0 or y<0, z<0 (insufficient)
(1) x>0, yz>0 or x<0, yz<0 (insufficient)
(1)and(2) x>0, yz>0, y?0, z?0 => (y+z)?0

answer E
Re: DS 6   [#permalink] 29 May 2004, 12:36
    Similar topics Author Replies Last post
Similar
Topics:
 New posts DS2-6 Bhai 3 03 Jun 2004, 20:06
New posts ds ets integer 6 mandy 3 02 Jul 2005, 15:22
New posts DS -GMAT Prep2 - 6 seofah 2 28 Apr 2007, 15:18
Popular new posts (D/S) N is divisible by 6 pretttyune 15 13 Nov 2007, 08:12
New posts 1 EXPERTS_POSTS_IN_THIS_TOPIC DS6 LM 7 10 May 2010, 09:33
Display posts from previous: Sort by

DS 6

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma, IanStewart

Search for:


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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com