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

It is currently 19 Jun 2018, 01:43

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

X,Y,Z & Inequalities

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 01 May 2009
Posts: 40
X,Y,Z & Inequalities [#permalink]

Show Tags

New post 20 Jul 2009, 01:12
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:00) wrong based on 1 sessions

HideShow timer Statistics

Good day ppl,

Some help needed.

If x, y, and z are three integers, are they consecutive integers?
(1) z – x = 2
(2) x < y < z

Please provide detailed explanations if possible. Thanks alot!

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Senior Manager
Senior Manager
avatar
Joined: 23 Jun 2009
Posts: 353
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago
Re: X,Y,Z & Inequalities [#permalink]

Show Tags

New post 20 Jul 2009, 03:09
C.
If z-x = 2 and x<y<z and x,y,z are integers. There will be only one possibility => y-x=z-y=1 ;)
1 is insuff because we do not know the order of y
2 is insuff because we do not know the differences between (x and y) and (y and z)
Intern
Intern
avatar
Joined: 20 Jul 2009
Posts: 1
Re: X,Y,Z & Inequalities [#permalink]

Show Tags

New post 20 Jul 2009, 07:06
This is how I would approach it.

the info given to us: x,y,z are integers
the question: are x,y,z consecutive?
the underlying question: do x,y,z all differ by one?

stmt 1:
- rewrite as z=x+2
- we now know that x is 2 larger than z
- but still not suff, eliminate D & A

stmt 2:
-x<y<z just tell us the relation ship among all three
-x is larger than y, could be by only 1, but also by more
-not suff, eliminate B

both stmt together:
-using z=x+2 and x<y<z
-rewrite as x<y<x+2
-you can now infer (since we're dealing with integers) that we now have x<x+1<x+2
-answer is C

Hope this helps, shoot me an email if you have any questions. Good Luck!
Intern
Intern
avatar
Joined: 01 May 2009
Posts: 40
Re: X,Y,Z & Inequalities [#permalink]

Show Tags

New post 23 Jul 2009, 08:19
Understood, thanks alot ppl~

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: X,Y,Z & Inequalities   [#permalink] 23 Jul 2009, 08:19
Display posts from previous: Sort by

X,Y,Z & Inequalities

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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

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®.