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

It is currently 24 Oct 2014, 16:21

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

Are all of the numbers in a certain list of 15 numbers

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 133
Location: Shanghai China
Followers: 2

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

Are all of the numbers in a certain list of 15 numbers [#permalink] New post 31 Jul 2011, 03:10
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

55% (01:31) correct 45% (00:36) wrong based on 11 sessions
Are all of the numbers in a certain list of 15 numbers equal?

(1) The sum of all of the numbers in the list is 60
(2) The sum of any 3 numbers in the list is 12
[Reveal] Spoiler: OA
Senior Manager
Senior Manager
User avatar
Joined: 03 Mar 2010
Posts: 445
Schools: Kelley,Tepper,Carlson,Kenan Flager,Broad
Followers: 4

Kudos [?]: 120 [0], given: 22

Re: DS problem pls help me to explain the problem~ Thank u~(3) [#permalink] New post 31 Jul 2011, 05:28
Discussed here:

http://gmatclub.com/forum/equal-number-ds-find-the-shortcut-81028.html
_________________

My dad once said to me: Son, nothing succeeds like success.

Manager
Manager
User avatar
Joined: 11 Jul 2009
Posts: 156
WE: Design (Computer Software)
Followers: 1

Kudos [?]: 17 [0], given: 41

GMAT ToolKit User
Re: DS problem pls help me to explain the problem~ Thank u~(3) [#permalink] New post 31 Jul 2011, 06:00
2 is sufficient...B is answer
_________________

Kaustubh

Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 133
Location: Shanghai China
Followers: 2

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

Re: DS problem pls help me to explain the problem~ Thank u~(3) [#permalink] New post 01 Aug 2011, 19:35
For B, any three number's sum is 12. So what if 2,5,5, the sum is 12 but they are not equal.

Could you explain this ????

jamifahad wrote:
Manager
Manager
avatar
Status: Single
Joined: 05 Jun 2011
Posts: 133
Location: Shanghai China
Followers: 2

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

Re: DS problem pls help me to explain the problem~ Thank u~(3) [#permalink] New post 01 Aug 2011, 19:35
For B, any three number's sum is 12. So what if 2,5,5, the sum is 12 but they are not equal.

Could you explain this ????


mehtakaustubh wrote:
2 is sufficient...B is answer
1 KUDOS received
BSchool Thread Master
avatar
Joined: 19 Feb 2010
Posts: 401
Followers: 20

Kudos [?]: 129 [1] , given: 76

Re: DS problem pls help me to explain the problem~ Thank u~(3) [#permalink] New post 02 Aug 2011, 09:52
1
This post received
KUDOS
They all must be equal. The key word here is ANY.
You have 15 numbers. If you pick 2,5,5, what other numbers you have? If you have another five, then you could get 3 numbers this way: 5,5,5 and that won't be 12. So, if the sum of ANY 3 numbers is 12, then there are only fours in the list.
Re: DS problem pls help me to explain the problem~ Thank u~(3)   [#permalink] 02 Aug 2011, 09:52
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic Are all of the numbers in a certain list of 15 numbers sondenso 9 17 Jul 2009, 23:52
Are all of the numbers in a certain list of 15 numbers puma 4 15 Jun 2008, 09:31
Are all of the numbers in a certain list of 15 numbers el1981 4 17 Feb 2008, 16:15
Are all of the numbers in a certain list of 15 numbers maxn 5 09 Oct 2005, 04:25
Are all of the numbers in a certain list of 15 numbers Folaa3 1 01 Jun 2005, 18:10
Display posts from previous: Sort by

Are all of the numbers in a certain list of 15 numbers

  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®.