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

It is currently 24 Jul 2014, 04:17

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

Set A contains all the even numbers.....

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 22 Sep 2010
Posts: 91
Followers: 1

Kudos [?]: 12 [0], given: 0

Set A contains all the even numbers..... [#permalink] New post 08 Oct 2010, 04:39
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

25% (02:44) correct 75% (00:48) wrong based on 4 sessions
Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 and 150 inclusive. What is the difference between the sum of elements of set B and that of set A?

A. 2500
B. 5050
C. 11325
D. 6275
E. 2550
Manager
Manager
avatar
Joined: 22 Jun 2010
Posts: 57
Followers: 1

Kudos [?]: 7 [0], given: 10

Re: Set A contains all the even numbers..... [#permalink] New post 08 Oct 2010, 04:49
pzazz12 wrote:
Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 and 150 inclusive. What is the difference between the sum of elements of set B and that of set A?

A. 2500
B. 5050
C. 11325
D. 6275
E. 2550


Sum of an evenly spaced set = first term + last term/2 * number of terms

Set A = (2 + 50)/2 * 25 = 26 x 25 (do not calculate yet!)
Set B = (102 + 150)/2 * 25 = 126 x 25

Now you see, the difference is exactly 100 x 25 = 2500

Cheers,
André
Manager
Manager
User avatar
Joined: 08 Sep 2010
Posts: 237
Location: India
WE 1: 6 Year, Telecom(GSM)
Followers: 4

Kudos [?]: 68 [0], given: 21

GMAT Tests User
Re: Set A contains all the even numbers..... [#permalink] New post 08 Oct 2010, 05:53
Answer is A.

2+4+6+......+50

102+104+106+....+150=(100+100+100+.....till 25th term)+(2+4+6+......+50)= 2500+ 1st one
Re: Set A contains all the even numbers.....   [#permalink] 08 Oct 2010, 05:53
    Similar topics Author Replies Last post
Similar
Topics:
For a set X containing n integers, is the mean even? RohitBhalla 2 10 Sep 2012, 03:46
1 Experts publish their posts in the topic Set A contains 20 numbers and Set B contains 40 numbers. Is piyushksharma 1 10 May 2012, 05:17
1 Experts publish their posts in the topic A set consists of 12 numbers, all are even or multiple of 5. loveparis 7 09 Feb 2011, 14:19
Experts publish their posts in the topic Does set S contain any even numbers ? blog 12 04 Feb 2008, 14:11
Set A contains 4 elements, all of which are even numbers, kevincan 4 12 Jul 2006, 04:22
Display posts from previous: Sort by

Set A contains all the even numbers.....

  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®.