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

It is currently 18 Jun 2018, 14:11

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

7 married couples are sitting in the lounge of a certain

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

DS Forum Moderator
avatar
P
Joined: 22 Aug 2013
Posts: 1186
Location: India
Premium Member
7 married couples are sitting in the lounge of a certain [#permalink]

Show Tags

New post 10 Mar 2018, 11:56
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

52% (01:24) correct 48% (01:12) wrong based on 52 sessions

HideShow timer Statistics

7 married couples are sitting in the lounge of a certain airport on an evening. No other persons are present. Suddenly out of these 14 people, N people got up and left. No one else either came into or got away from the lounge. How many married couples are still remaining in the lounge?

(1) N > 10

(2) N < 13

Posted from my mobile device
BSchool Forum Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 2804
Location: India
GPA: 3.12
Premium Member
7 married couples are sitting in the lounge of a certain [#permalink]

Show Tags

New post 10 Mar 2018, 13:53
From the question stem, it is clear that there are 7 married couples
in the lounge and suddenly N people leave from the lounge. We need
to check how many married couples remain after these N people leave.

1. N > 10
N could be 11,12,13, or 14.
If N=11, there could be 1 couple and 1 husbands left in the lounge.
Other possibilities include all husbands/wives. As it is unclear, how
many married couples remain, this statement is not sufficient

2. N < 13
N could be between 1 and 12
Consider the same example that we have used to prove the validity
of Statement 1. Again, this statement is not sufficient

On combining the information in both the sentences, we can definitely say
that the number of people who got up and left is either 11 or 12. Using
the same case(if N=11, we can't clearly come to a conclusion about the
number of married couples which remain in the lounge) (Insufficient - Option E)
_________________

You've got what it takes, but it will take everything you've got

Manager
Manager
avatar
S
Joined: 23 Sep 2016
Posts: 231
Premium Member Reviews Badge
Re: 7 married couples are sitting in the lounge of a certain [#permalink]

Show Tags

New post 12 Mar 2018, 00:50
amanvermagmat wrote:
7 married couples are sitting in the lounge of a certain airport on an evening. No other persons are present. Suddenly out of these 14 people, N people got up and left. No one else either came into or got away from the lounge. How many married couples are still remaining in the lounge?

(1) N > 10

(2) N < 13

Posted from my mobile device

to find remaining couple we can say
14-N(couple member)/2
so N>10 it means N can be 11,12,13, and 14
so If we assume N= 11 then we can say 5 couple go and 1 more person according 1 couple left or we can also say first 7 are single member out of couple and rest 4 are their partners then we can say no couple is left all 3 are individuals insufficient.
Statement 2 N<13 N can be 1,2....12
same problem as above Not sufficient
Combing both N can be 11,12 Still we can't say left persons consist of 1 couple or just 3 persons.
So E is the answer.


IF YOU LIKE MY EXPLANATION PLEASE PROVIDE ME KUDOS
Re: 7 married couples are sitting in the lounge of a certain   [#permalink] 12 Mar 2018, 00:50
Display posts from previous: Sort by

7 married couples are sitting in the lounge of a certain

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.