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

It is currently 19 Jun 2013, 14:02
Customize  |  Hide

Search
Register
New posts
Unanswered

a, b, and c are integers. Is a+b+c even? (1) a+b is even (2)

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1680
Followers: 4

Kudos [?]: 16 [0], given: 0

a, b, and c are integers. Is a+b+c even? (1) a+b is even (2) [#permalink] New post 07 Aug 2003, 02:26
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
a, b, and c are integers. Is a+b+c even?

(1) a+b is even
(2) a+c is even
Manager
Manager
Joined: 24 Jun 2003
Posts: 94
Location: Moscow
Followers: 1

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

answer [#permalink] New post 07 Aug 2003, 03:10
One vote for E.

Solution:

Statement one: insufficient. If a+b is even, ether a and b are both even, or both odd. In the first case c can be odd and even.

Statement two: insufficient. See statement one.

Combine: insufficient. Let us add two statements together. (Do not forget: even+even=even). We get 2a+b+c = even. Substitute even a,b and c into the combined equation => 2a+b+c=even (original a+b+c - even). Now try a,b,c - odd => 2a+b+c = is still even, however, the original statement is odd. Thus, the answer is E.

- Stolyar?
_________________

Respect,

KL

Manager
Manager
User avatar
Joined: 24 Jun 2003
Posts: 150
Location: India
Followers: 1

Kudos [?]: 1 [0], given: 0

GMAT Tests User
Re: DS: EVEN [#permalink] New post 07 Aug 2003, 05:04
stolyar wrote:
a, b, and c are integers. Is a+b+c even?

(1) a+b is even
(2) a+c is even


My answer is E

We know that

even+even=even and odd+odd=even
AND
even+even+even=even and odd+odd+even=even

Now from (1) we know that a and b are both odd or both even

From (2) we know that a and c are both odd or both even

Combining the two we know that a, b and c are of the same kind - odd or even.

In this case, a+b+c can be even only if all three are even - which we do not know.

Hence I choose E
Re: DS: EVEN   [#permalink] 07 Aug 2003, 05:04
    Similar topics Author Replies Last post
Similar
Topics:
 New posts a, b, c are integers. Is (a*b*c)! even? (1) a^2-5a=-6 (2) stolyar 6 13 Aug 2003, 10:23
New posts Is A+B+C=0? (1) A=-B (2) B=C stolyar 4 08 Jul 2004, 05:20
New posts A and B are integers. Is ! even? (1) A is even (2) B is even stolyar 6 18 Dec 2004, 18:02
New posts a,b,c three consecutive even integer! is abc divisable by 3 chiragr 2 12 Jun 2006, 21:23
New posts Experts publish their posts in the topic If a, b, and c are integers and a*b^2/c is a positive even Orange08 2 26 Sep 2010, 13:04
Display posts from previous: Sort by

a, b, and c are integers. Is a+b+c even? (1) a+b is even (2)

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: VeritasPrepKarishma, Bunuel, 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