a, b, and c are integers. Is a+b+c even? (1) a+b is even (2) : DS Archive
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 03 Dec 2016, 03:53
GMAT Club Tests

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

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

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1603
Followers: 8

Kudos [?]: 235 [0], given: 0

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

Show Tags

New post 07 Aug 2003, 01:26
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 2 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

a, b, and c are integers. Is a+b+c even?

(1) a+b is even
(2) a+c is even
Manager
Manager
avatar
Joined: 24 Jun 2003
Posts: 91
Location: Moscow
Followers: 1

Kudos [?]: 4 [0], given: 0

answer [#permalink]

Show Tags

New post 07 Aug 2003, 02:10
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: 146
Location: India
Followers: 2

Kudos [?]: 2 [0], given: 0

Re: DS: EVEN [#permalink]

Show Tags

New post 07 Aug 2003, 04:04
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, 04:04
Display posts from previous: Sort by

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

  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 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®.