Find all School-related info fast with the new School-Specific MBA Forum

It is currently 01 Feb 2015, 11:50

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

a,b and c are consecutive integers where a<b<c. which

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
VP
VP
avatar
Joined: 22 Nov 2007
Posts: 1104
Followers: 7

Kudos [?]: 166 [0], given: 0

a,b and c are consecutive integers where a<b<c. which [#permalink] New post 16 Dec 2007, 04:00
a,b and c are consecutive integers where a<b<c. which of the following could not be the value of c^2-b^2-a^2?

A.-21
B.-12
C.-6
D.0
E.3
Expert Post
CEO
CEO
User avatar
Joined: 17 Nov 2007
Posts: 3578
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Followers: 391

Kudos [?]: 2017 [0], given: 359

GMAT ToolKit User Premium Member
 [#permalink] New post 16 Dec 2007, 06:20
Expert's post
C

S=c²-b²-a²=(a+2)²-(a+1)²-a²=a²+4a+4-a²-2a-1-a²=-a²+2a+3

for a=0: S=3
a=-1: S=0
a=-2: S=-5
a=-3: S=-12
a=-4: S=-21
VP
VP
avatar
Joined: 22 Nov 2007
Posts: 1104
Followers: 7

Kudos [?]: 166 [0], given: 0

 [#permalink] New post 16 Dec 2007, 08:14
nope...think also in a geometric way....
  [#permalink] 16 Dec 2007, 08:14
    Similar topics Author Replies Last post
Similar
Topics:
3 In the figure, BD and CD are angular bisectors of <B and <C in an vatsavayi 1 25 Oct 2014, 05:12
If a , b , and c are consecutive integers, which of the aaron22197 5 12 Aug 2008, 21:36
Experts publish their posts in the topic a, b and are consecutive integers where a<b<c. which marcodonzelli 2 24 Jan 2008, 23:46
Experts publish their posts in the topic a,b, and c are consecutive integers where a<b<c. which marcodonzelli 6 29 Dec 2007, 09:20
A, B, C, D are 4 integers such that A <B <C <D, Are humtum0 2 09 Sep 2007, 12:02
Display posts from previous: Sort by

a,b and c are consecutive integers where a<b<c. which

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.