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

 It is currently 17 Apr 2015, 19:24

### 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(y + z) > 0? 1) xyz > 0 2) yz > 0

Author Message
TAGS:
Manager
Joined: 28 Feb 2003
Posts: 100
Followers: 1

Kudos [?]: 3 [0], given: 0

Is x(y + z) > 0? 1) xyz > 0 2) yz > 0 [#permalink]  19 May 2003, 00:13
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions
Is x(y + z) > 0?

1) xyz > 0
2) yz > 0
Intern
Joined: 15 Feb 2005
Posts: 23
Followers: 0

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

Re: GMAT-DS: greater than? [#permalink]  25 Feb 2005, 12:48
brstorewala wrote:
Is x(y + z) > 0?

1) xyz > 0
2) yz > 0

Can someone explain how the answer is E...please. It seems to be like the answer is C.

1) None of x, y or z may be zero
2) Either both y and z are positive, or both negative.

Combining both, if both y and z are negative, x should be negative as well. That makes x(y+z) positive.

What am I missing...........
VP
Joined: 30 Sep 2004
Posts: 1490
Location: Germany
Followers: 4

Kudos [?]: 85 [0], given: 0

E)

1) +++ or --- or --+ or -+- or --+ => insuff
2) ++ or -- => insuff
1)+2) +(--) < 0 or +(++) > 0 => insuff
Similar topics Replies Last post
Similar
Topics:
If xyz>0, is x(y^2)(z^3)>0? 1) y>0 2) x>0 1 27 Apr 2006, 19:18
If xyz>0, is (xy)^(2z)^3>0 1) y>0 2) x>0 7 27 Apr 2006, 19:17
If xyz>0, is xy^2z^3>0 1) y>0 2) x>0 7 26 Apr 2006, 02:43
If x>y>z, is xz>0? 1) xy<0 2) yz>0 5 19 Mar 2006, 06:02
Is XYZ > 0? 1) XY > 0 2) YZ> 0 3 07 Jan 2006, 15:13
Display posts from previous: Sort by