GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Jun 2019, 00:07

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

If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 55681
If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12  [#permalink]

Show Tags

New post 17 Dec 2017, 23:52
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

6% (00:22) correct 94% (00:21) wrong based on 34 sessions

HideShow timer Statistics

Retired Moderator
avatar
P
Joined: 22 Aug 2013
Posts: 1437
Location: India
Re: If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12  [#permalink]

Show Tags

New post 18 Dec 2017, 00:03
Bunuel wrote:
If z is negative, is y greater than zero?

(1) yz = 4
(2) yz = 12


Product of a negative number with another number can be positive ONLY if the other number is also negative. (because if other number is 0, product will be 0 and if other number is positive, product will be negative)

(1) since product of y and z is positive and z is negative, y also must be negative. So y cannot be greater than 0. We get NO as our answer. Sufficient.

(2) here also product of y and z is positive, so y cannot be greater than 0. NO as our answer. Sufficient.

Hence D answer
Intern
Intern
avatar
B
Joined: 09 Aug 2017
Posts: 23
Re: If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12  [#permalink]

Show Tags

New post 18 Dec 2017, 00:05
D ?
Statement 1 : if z is negative then y has to be negative . Answer No. Sufficient

Same with statement two.
M I correct ? @bunuel

Sent from my Redmi 3S using GMAT Club Forum mobile app
Senior Manager
Senior Manager
User avatar
G
Joined: 13 Feb 2018
Posts: 329
GMAT 1: 640 Q48 V28
Premium Member
Re: If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12  [#permalink]

Show Tags

New post 27 Mar 2018, 02:04
Seems like there is a typo error.
GMAT Club Bot
Re: If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12   [#permalink] 27 Mar 2018, 02:04
Display posts from previous: Sort by

If z is negative, is y greater than zero? (1) y z = 4 (2) yz = 12

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


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