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

It is currently 24 Jul 2014, 07:53

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

What is the sum of all of the integers in the chart above?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Status: Preparing for the 4th time -:(
Joined: 25 Jun 2011
Posts: 563
Location: United Kingdom
Concentration: International Business, Strategy
GMAT Date: 06-22-2012
GPA: 2.9
WE: Information Technology (Consulting)
Followers: 12

Kudos [?]: 263 [0], given: 217

GMAT Tests User
What is the sum of all of the integers in the chart above? [#permalink] New post 15 Jan 2012, 14:10
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  25% (low)

Question Stats:

79% (02:30) correct 21% (01:29) wrong based on 48 sessions
Attachment:
111.JPG
111.JPG [ 15.19 KiB | Viewed 1274 times ]
What is the sum of all of the integers in the chart above?

A. 0
B. 300
C. 500
D. 1500
E. 6500
[Reveal] Spoiler: OA

_________________

Best Regards,
E.

MGMAT 1 --> 530
MGMAT 2--> 640
MGMAT 3 ---> 610 :-(


Last edited by Bunuel on 22 May 2013, 02:49, edited 4 times in total.
Edited the question and added the chart
Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18719
Followers: 3239

Kudos [?]: 22316 [1] , given: 2613

Re: Sum in the chart [#permalink] New post 15 Jan 2012, 14:27
1
This post received
KUDOS
Expert's post
enigma123 wrote:
Guys - please see attached. can you please let me know what is the underlying concept behind to solve this and what will be the answer? I don't have an OA unfortunately.

What is the sum of all of the integers in the chart above?

A. 0
B. 300
C. 500
D. 1500
E. 6500


Reorder the numbers in columns in ascending absolute value:
Attachment:
untitled.JPG
untitled.JPG [ 15.23 KiB | Viewed 1281 times ]
Now, it's easy to spot that the numbers in each column represent an equally spaced set (AP) and the sum in each can be found by mean*# of terms:

Sum=5*100+5*(-200)+5*(300)+5*(-400)+5*(500)=500-1,000+1,500-2,000+2,500=1,500.

Answer: D.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Director
Director
avatar
Status: Preparing for the 4th time -:(
Joined: 25 Jun 2011
Posts: 563
Location: United Kingdom
Concentration: International Business, Strategy
GMAT Date: 06-22-2012
GPA: 2.9
WE: Information Technology (Consulting)
Followers: 12

Kudos [?]: 263 [0], given: 217

GMAT Tests User
Re: Sum in the chart [#permalink] New post 15 Jan 2012, 14:29
Sorry Bunuel. The question is What is the sum of all of the integers in the chart above?
_________________

Best Regards,
E.

MGMAT 1 --> 530
MGMAT 2--> 640
MGMAT 3 ---> 610 :-(

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18719
Followers: 3239

Kudos [?]: 22316 [0], given: 2613

Re: Sum in the chart [#permalink] New post 15 Jan 2012, 14:39
Expert's post
enigma123 wrote:
Sorry Bunuel. The question is What is the sum of all of the integers in the chart above?


Yes, I guessed so and that's exactly the question I answered in my previous post.

P.S. Edited the question in your initial post and added the chart.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Director
Director
avatar
Status: Preparing for the 4th time -:(
Joined: 25 Jun 2011
Posts: 563
Location: United Kingdom
Concentration: International Business, Strategy
GMAT Date: 06-22-2012
GPA: 2.9
WE: Information Technology (Consulting)
Followers: 12

Kudos [?]: 263 [0], given: 217

GMAT Tests User
Re: Sum in the chart [#permalink] New post 15 Jan 2012, 14:42
Absolutely and many thanks. As always, thorough and a very helpful answer.
_________________

Best Regards,
E.

MGMAT 1 --> 530
MGMAT 2--> 640
MGMAT 3 ---> 610 :-(

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18719
Followers: 3239

Kudos [?]: 22316 [0], given: 2613

Re: What is the sum of all of the integers in the chart above? [#permalink] New post 22 May 2013, 03:00
Expert's post
Expert Post
Verbal Forum Moderator
Verbal Forum Moderator
User avatar
Joined: 10 Oct 2012
Posts: 626
Followers: 40

Kudos [?]: 533 [0], given: 135

Premium Member
Re: What is the sum of all of the integers in the chart above? [#permalink] New post 22 May 2013, 04:55
Expert's post
enigma123 wrote:
Attachment:
The attachment 111.JPG is no longer available
What is the sum of all of the integers in the chart above?

A. 0
B. 300
C. 500
D. 1500
E. 6500


Sum of the first column = 5*100 = 500.
Sum of the last column = 500+5*400 = 2500[As all the corresponding terms are increased by 400]
Sum of the second column = 5*-200 = -1000
Sum of the fourth column = -1000-5*200 = -2000
The total sum = 500+2500-1000-2000 = 0
Thus everything when added gets cancelled. Except the inner column. That is an AP and the sum = 5*300 = 1500.
Attachments

image.jpg
image.jpg [ 14.15 KiB | Viewed 565 times ]


_________________

All that is equal and not-Deep Dive In-equality

Hit and Trial for Integral Solutions

Manager
Manager
avatar
Joined: 24 Apr 2013
Posts: 75
Location: United States
Followers: 0

Kudos [?]: 6 [0], given: 23

Re: What is the sum of all of the integers in the chart above? [#permalink] New post 22 May 2013, 08:47
It is easy once you spot that in the same row, the 1st outer most and the second outer most cancel one another. You are then left with adding the column in the middle.
_________________

Struggling: make or break attempt

Re: What is the sum of all of the integers in the chart above?   [#permalink] 22 May 2013, 08:47
    Similar topics Author Replies Last post
Similar
Topics:
11 Experts publish their posts in the topic What is the sum of the integers in the table above? Baten80 17 06 Apr 2011, 13:21
7 Experts publish their posts in the topic If x is an integer, what is the sum of all distinct positive nades09 4 26 Nov 2010, 18:55
Pie chart so all sum up to 100% but providing info as table prude_sb 3 15 Jan 2007, 20:14
What is the positive integer n ? (1) The sum of all of the giddi77 13 18 Apr 2006, 23:58
1 What is the sum of all 3-digit positive integers that leave thearch 6 04 Jun 2005, 08:06
Display posts from previous: Sort by

What is the sum of all of the integers in the chart above?

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.