GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 16 Dec 2018, 14:18

### 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

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

## Events & Promotions

###### Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
• ### Free GMAT Prep Hour

December 16, 2018

December 16, 2018

03:00 PM EST

04:00 PM EST

Strategies and techniques for approaching featured GMAT topics
• ### FREE Quant Workshop by e-GMAT!

December 16, 2018

December 16, 2018

07:00 AM PST

09:00 AM PST

Get personalized insights on how to achieve your Target Quant Score.

# No senator spoke at the convention unless he or she was a

Author Message
TAGS:

### Hide Tags

VP
Status: mission completed!
Joined: 02 Jul 2009
Posts: 1283
GPA: 3.77
No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

16 Mar 2011, 23:11
1
6
00:00

Difficulty:

55% (hard)

Question Stats:

61% (01:54) correct 39% (02:04) wrong based on 445 sessions

### HideShow timer Statistics

No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?

(A) No one but senators spoke at the convention.
(B) No Democrat spoke at the convention.
(C) Only Democrats spoke at the convention.
(D) No senator spoke at the convention.
(E) Some Democrat senators spoke at the convention.

I will post OA later.

_________________

Audaces fortuna juvat!

GMAT Club Premium Membership - big benefits and savings

Manager
Joined: 09 Feb 2011
Posts: 229
Concentration: General Management, Social Entrepreneurship
Schools: HBS '14 (A)
GMAT 1: 770 Q50 V47

### Show Tags

17 Mar 2011, 00:29
I think the answer is D. Why I think B is wrong is that there may be democrats who spoke but were not senators.
Director
Status: Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Joined: 03 Feb 2011
Posts: 739

### Show Tags

17 Mar 2011, 00:57
Yeah that's reasonable d makes sense

Posted from my mobile device
Manager
Joined: 12 Oct 2009
Posts: 151

### Show Tags

17 Mar 2011, 10:37
1
IMO D
Manager
Status: Bunuel's fan!
Joined: 08 Jul 2011
Posts: 168

### Show Tags

10 May 2012, 08:07
vivesomnium wrote:
I think the answer is D. Why I think B is wrong is that there may be democrats who spoke but were not senators.

because there is a chance that someone who is democrat and not a senator spoke. Saying the scope of "no democrat" is too wide.
Intern
Joined: 04 Apr 2013
Posts: 4
GMAT 1: 650 Q48 V33
GPA: 3.1
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

04 Jul 2013, 00:15
Can someone help advise if there is any diagram or logical steps which should be followed in order to end up with D? I'm not good at such kind of question. Many thanks then.
Director
Joined: 14 Dec 2012
Posts: 753
Location: India
Concentration: General Management, Operations
GMAT 1: 700 Q50 V34
GPA: 3.6
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

04 Jul 2013, 00:44
2
kimberly87 wrote:
Can someone help advise if there is any diagram or logical steps which should be followed in order to end up with D? I'm not good at such kind of question. Many thanks then.

hi,
thats true these types are mindbreaking.
lets try

there are two types of senator:
senators who spoke in convention (SWS)and
senators who donot(SWD)

Similarly two types of democrats:
democrats who spoke(DWS)
democrats who donot(DWD)

now lets tackle the argument:
No senator spoke at the convention unless he or she was a Democrat. ==>means Senators who spoke ,they were democrats==>SWS=D.....(1)
No Democrat both spoke at the convention and was a senator.==>means if a person is speaking in convention and he is a SENATOR...then that person is not a DEMOCRAT
===>SWS is not equal to D......(2)
If both 1 and 2 are to be true.....it means....NO senator spoke....then only the 2 equation will hold true.
and option D says the same.

hope it helps
_________________

When you want to succeed as bad as you want to breathe ...then you will be successfull....

GIVE VALUE TO OFFICIAL QUESTIONS...

learn AWA writing techniques while watching video : http://www.gmatprepnow.com/module/gmat-analytical-writing-assessment

Manager
Status: Got Bling! Joined Phd Finance at IIML
Joined: 03 Jul 2013
Posts: 80
Location: India
Concentration: Finance, Economics
Schools: iim-bangalore - Class of 1994
GMAT 1: 750 Q59 V43
GPA: 3.12
WE: Research (Investment Banking)
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

08 Jul 2013, 19:26
another new type of question, might just become staple in the new GMAT with a null set intersection in the arguments. ("Does not mean anything" for old mental fogies like me)
Intern
Joined: 18 Jul 2013
Posts: 35
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

19 Nov 2013, 17:16
Why not it is c.
Only democrat spoke at the convention because if
senator not spoke - is no democrat
senator spoke - is democrat
so only democrat spoke at the convention is not rgt .
Retired Moderator
Joined: 15 Jun 2012
Posts: 1017
Location: United States
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

20 Nov 2013, 00:12
taleesh wrote:
Why not it is c.
Only democrat spoke at the convention because if
senator not spoke - is no democrat
senator spoke - is democrat
so only democrat spoke at the convention is not rgt .

Hi taleesh.

There are TWO statements:
(1) Senators who spoke MUST be Democrat.
(2) No Democrat both spoke and was senator.

Two statements must work together.

You're correct for statement 1: Only democrat senator spoke at the convention because if he/she is not democrat, he/she will not speak.

But you omitted the second statement: No democrat both spoke and was senator
==> NO senator who was democrat spoke ==> No democrat senator spoke.
==> Add statement (1): only democrat senator spoke at the convention
==> Clearly, no senator spoke.

Hope it helps.
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

Chris Bangle - Former BMW Chief of Design.

Senior Manager
Joined: 02 Dec 2014
Posts: 376
Location: Russian Federation
Concentration: General Management, Economics
GMAT 1: 640 Q44 V33
WE: Sales (Telecommunications)
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

20 Dec 2015, 06:12
PTK wrote:
No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?

(A) No one but senators spoke at the convention.
(B) No Democrat spoke at the convention.
(C) Only Democrats spoke at the convention.
(D) No senator spoke at the convention.
(E) Some Democrat senators spoke at the convention.

I will post OA later.

Good question.
I draw the following inferences. 1) If one speaks - he or she is not a senator. 2) If one doesn't speak - he or she a senator
Now look at options
A) Out. You can't speak and be a senator
B) Out. One can speak and be a democrat (if you are not a democrat you can't speak)
C) We don't know who else spoke on the convention
D)Yes right. If you speak you are not a senator (both conditions are not possible)
E) Again out. Senators can't speak. If you are a senator then you don't speak
_________________

"Are you gangsters?" - "No we are Russians!"

Senior Manager
Joined: 26 Jun 2017
Posts: 381
Location: Russian Federation
Concentration: General Management, Strategy
WE: Information Technology (Other)
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

14 Oct 2017, 04:24
1
PTK wrote:
No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?

(A) No one but senators spoke at the convention. Actually it is the opposite +- and -+ ---> false
(B) No Democrat spoke at the convention. We have ++ in one cell ---> false
(C) Only Democrats spoke at the convention - we have ++ in non democrate-njn senator cell ---> false.
(D) No senator spoke at the convention. +- and -+ ---> True
(E) Some Democrat senators spoke at the convention. +- in this cell ---> fals

I will post OA later.

1st row - 1st condition
2nd row - 2nd condition
The cell with + and + - these people are the ones who can speak at the convention.
Any - means, this person can not speak at the convention.
Attachments

GMAT - CR question - table.jpg [ 2.96 MiB | Viewed 859 times ]

Manager
Joined: 10 Jun 2016
Posts: 76
Location: India
Concentration: Operations, Strategy
GMAT 1: 710 Q49 V37
GPA: 3.3
WE: Project Management (Energy and Utilities)
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

14 Oct 2017, 04:47
PTK wrote:
No senator spoke at the convention unless he or she was a Democrat. No Democrat both spoke at the convention and was a senator.
Which one of the following conclusions can be correctly drawn from the statements above?

(A) No one but senators spoke at the convention.
(B) No Democrat spoke at the convention.
(C) Only Democrats spoke at the convention.
(D) No senator spoke at the convention.
(E) Some Democrat senators spoke at the convention.

I will post OA later.

I will just try to simplify the language in order to reach to the answer in a simpler way. [My easier-to-understand statement modification might have some ingrained logical loopholes, however, they make it easier to reach to the correct answer choice.

No senator spoke at the convention unless he or she was a Democrat - Only Democrats/Republicans-who-weren't-senators spoke at the convention.
No Democrat both spoke at the convention and was a senator. - No Democrat Senator spoke at the convention.

If we check both the simplified statements above, it is clear that no senator spoke at the convention.
Therefore, D.
_________________

"Success is a lousy teacher. It seduces smart people to think they can't lose" - Bill Gates.

Intern
Joined: 09 May 2016
Posts: 8
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

13 Jun 2018, 20:23
D, considering data from both statements
Senior Manager
Joined: 14 Feb 2018
Posts: 395
Re: No senator spoke at the convention unless he or she was a  [#permalink]

### Show Tags

13 Jun 2018, 23:50
Since no senator can speak until he is a democrat. No democrat who spoke was a senator.

Thus, we can infer that none of the senators are democrat and thus, no senator spoke.

Thus, we have -

(A) No one but senators spoke at the convention. - against the premise.

(B) No Democrat spoke at the convention. - opposite to what v the premise states.

(C) ((Only)) Democrats spoke at the convention. - we cannot infer something so extreme. The rule of being a democrat might apply only to senators, who knows ??

(D) No senator spoke at the convention.- this is exactly our paraphrase. Best option till now.

(E) Some Democrat senators spoke at the convention. - second part clearly says that none of the democrats who spoke we senators. And we also know that for a senator to speak, he must be a democrat.

Thus, D is the best.

Sent from my Lenovo K53a48 using GMAT Club Forum mobile app
Re: No senator spoke at the convention unless he or she was a &nbs [#permalink] 13 Jun 2018, 23:50
Display posts from previous: Sort by