GMAT Changed on April 16th - Read about the latest changes here

It is currently 20 May 2018, 08:56

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

odd and even......

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
1 KUDOS received
Manager
Manager
avatar
Joined: 02 Sep 2008
Posts: 102
odd and even...... [#permalink]

Show Tags

New post 03 May 2009, 21:04
1
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

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

HideShow timer Statistics

Attachment:
3.GIF
3.GIF [ 9.05 KiB | Viewed 1176 times ]


--== 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.
Manager
Manager
avatar
Joined: 12 Apr 2006
Posts: 206
Location: India
Re: odd and even...... [#permalink]

Show Tags

New post 03 May 2009, 21:36
From statement 1

cd + C = Even

This is possible in 2 cases
when C is even or both C and d are odd

e*o + e = e
o*o + o = e

So insufficient

From statement 2

cd + 4c + 2d + 8 = even

cd + e + e + e = even

This is possible only when either c or d is even. So insufficient.

Combining both if c is even only than both the statement can be even, hence the answer is C.
Expert Post
CEO
CEO
User avatar
B
Joined: 17 Nov 2007
Posts: 3486
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
GMAT ToolKit User Premium Member
Re: odd and even...... [#permalink]

Show Tags

New post 05 May 2009, 07:51
Additional way.

Let's modify our statements: we can substitute c+2 for c and d+4 for d as adding even number does not change even/odd properties:

1) c(d+1) = even
2) cd = even

Now, it is obvious that c must be even for 1) & 2) statements as one of d or d+1 is odd.

--== 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.

_________________

HOT! GMAT TOOLKIT 2 (iOS) / GMAT TOOLKIT (Android) - The OFFICIAL GMAT CLUB PREP APP, a must-have app especially if you aim at 700+ | PrepGame

Re: odd and even......   [#permalink] 05 May 2009, 07:51
Display posts from previous: Sort by

odd and even......

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.