Last visit was: 21 May 2026, 04:36 It is currently 21 May 2026, 04:36
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Events & Promotions
User avatar
Vithal
User avatar
Joined: 01 Feb 2003
Last visit: 02 Jan 2020
Posts: 406
Own Kudos:
769
Location: Hyderabad
Posts: 406
Kudos: 769
DS: Survey 11 Jun 2005, 10:41
Kudos
Add Kudos
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

(N/A)

Question Stats:

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

History

Date
Time
Result
Not Attempted Yet
Please explain



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
tkirk32
User avatar
Joined: 07 Mar 2005
Last visit: 01 Jul 2005
Posts: 32
Own Kudos:
15
Posts: 32
Kudos: 15
DS: Survey 11 Jun 2005, 12:43
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I think its E.

Reasoning.

(1)

Tells us that 60 people consists of the following

Favorable for both M and N, Favorable to M, Favorable to N, Unsure to both, unsure to M, unsure to N.

(2)

Does not help us narrow anything down

(1) and (2) together:

I think we still have the problem of figuring out who voted for MvN and also was unsure of the other candidate.

I hate Ven diagram problems.
User avatar
sparky
User avatar
Joined: 18 Apr 2005
Last visit: 30 Jul 2005
Posts: 321
Own Kudos:
106
Location: Canuckland
Posts: 321
Kudos: 106
DS: Survey 11 Jun 2005, 12:47
Kudos
Add Kudos
Bookmarks
Bookmark this Post
seems like A.

1) Fm + Mn - Fmn + 40 (everyone else) = 100
Fmn = -100 + 40 + 70 = 10
sufficient

2) insuff, we need some extra info on 'not sure' group

I am not really sure how to do it fast. It would be really nice if someone write down a complete solution to this
User avatar
tkirk32
User avatar
Joined: 07 Mar 2005
Last visit: 01 Jul 2005
Posts: 32
Own Kudos:
15
Posts: 32
Kudos: 15
DS: Survey 11 Jun 2005, 13:22
Kudos
Add Kudos
Bookmarks
Bookmark this Post
that was my first answer to the problem sparky.

but arent you forgetting to factor in the "unsures" into the first equation.

We have people who could go Fm and Un.

?
User avatar
sparky
User avatar
Joined: 18 Apr 2005
Last visit: 30 Jul 2005
Posts: 321
Own Kudos:
106
Location: Canuckland
Posts: 321
Kudos: 106
DS: Survey 11 Jun 2005, 13:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
tkirk32
that was my first answer to the problem sparky.

but arent you forgetting to factor in the "unsures" into the first equation.

We have people who could go Fm and Un.

?
Show more


As long as we know favourable vs everything else and the total number of people we are set. They also can drink coffee or tea but it's included in everything else.
User avatar
cloudz9
User avatar
Joined: 17 May 2005
Last visit: 12 Jun 2007
Posts: 130
Own Kudos:
55
Location: Auckland, New Zealand
Posts: 130
Kudos: 55
DS: Survey 11 Jun 2005, 13:34
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I would say E as neither of the statements gives any information about the people who said 'not sure'
User avatar
FN
User avatar
Current Student
Joined: 28 Dec 2004
Last visit: 07 May 2012
Posts: 1,575
Own Kudos:
688
Given Kudos: 2
Location: New York City
Concentration: Social Enterprise
Schools:Wharton'11 HBS'12
Posts: 1,575
Kudos: 688
DS: Survey 11 Jun 2005, 18:01
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I am confused....

Vithal where did you get this question?


I would go with C..

though E comes to mind....when I am confused...my strategy on exam day is pick E when I am confused by a DS question.
avatar
HongHu
avatar
Joined: 03 Jan 2005
Last visit: 25 Apr 2011
Posts: 962
Own Kudos:
799
Posts: 962
Kudos: 799
DS: Survey 11 Jun 2005, 20:45
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I agree with Sparky that it is A.

(1) 40 people didn't favor either M or N. ie., 60 people either favored M or favored N. 30 people favored N. So 60-30=30 people favored M but not N and 10 people favored both M and N. Sufficient.

(2) 10 people unfavored both M and N.
FM+FN-FMN+UFM+UFN-UFMN+USM+USN-USMN=200
40+30-FMN+20+35-UFMN+40+35-USMN=200
We know UFMN=10, but don't know USMN, so we can't get FMN.
User avatar
Vithal
User avatar
Joined: 01 Feb 2003
Last visit: 02 Jan 2020
Posts: 406
Own Kudos:
769
Location: Hyderabad
Posts: 406
Kudos: 769
DS: Survey 11 Jun 2005, 21:02
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I personally rate this as a toughie for GMAT atleast!

here is the solution for the benefit of others: (Sparky and Hong never go wrong)
Attachments

solution.JPG
solution.JPG [ 24.58 KiB | Viewed 1283 times ]

User avatar
tarungmat
User avatar
Joined: 30 May 2005
Last visit: 05 Aug 2005
Posts: 14
Own Kudos:
21
Posts: 14
Kudos: 21
DS: Survey 15 Jun 2005, 01:38
Kudos
Add Kudos
Bookmarks
Bookmark this Post
got to be A.

Logic as spaky has stated.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderators:
Bunuel
Math Expert
110761 posts
GMATBusters
GMAT Tutor
1922 posts