It is currently 18 Oct 2017, 22:49

### 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 June
Open Detailed Calendar

# Permutation/Combination

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

### Hide Tags

Intern
Joined: 20 May 2013
Posts: 1

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

### Show Tags

20 May 2013, 13:49
There are 6 people models, 2 from Asia, 2 from Europe and 2 from America. How many ways can they arranged such that models from same continent are next to each other?? help please.

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

Manager
Status: *Lost and found*
Joined: 25 Feb 2013
Posts: 123

Kudos [?]: 124 [0], given: 14

Location: India
Concentration: General Management, Technology
GMAT 1: 640 Q42 V37
GPA: 3.5
WE: Web Development (Computer Software)

### Show Tags

20 May 2013, 14:42
AlfaTauri wrote:
There are 6 people models, 2 from Asia, 2 from Europe and 2 from America. How many ways can they arranged such that models from same continent are next to each other?? help please.

In this case, if you imagine the models in 6 chairs, sitting in blocks of 2, such the the models of the same continent are together.

The arrangement would look something like this diagrammatically:

_ _ | _ _ | _ _
B1 B2 B3

The arrangement can be {Asia,Europe,America} {Asia, America, Europe} ...... {America, Europe, Asia} {America, Asia, Europe} making it 6 distinct arrangements where the models can be seated next to each other if they are from the same continent.

Hope I am correct! Zarrlou Please do verify

Regards,
Arpan
_________________

Feed me some KUDOS! *always hungry*

My Thread : Recommendation Letters

Kudos [?]: 124 [0], given: 14

VP
Status: Far, far away!
Joined: 02 Sep 2012
Posts: 1120

Kudos [?]: 2327 [1], given: 219

Location: Italy
Concentration: Finance, Entrepreneurship
GPA: 3.8

### Show Tags

20 May 2013, 14:50
1
KUDOS
Almost correct.

This part is correct

"The arrangement can be {Asia,Europe,America} {Asia, America, Europe} ...... {America, Europe, Asia} {America, Asia, Europe} making it 6 distinct arrangements where the models can be seated next to each other if they are from the same continent."

But not complete, every model of one country can switch chair with the other A,B or B,A for each case.

So you have to multiply 6 by 2 for each pair of chair , 6*2*2*2=48.

Hope it's clear
_________________

It is beyond a doubt that all our knowledge that begins with experience.

Kant , Critique of Pure Reason

Tips and tricks: Inequalities , Mixture | Review: MGMAT workshop
Strategy: SmartGMAT v1.0 | Questions: Verbal challenge SC I-II- CR New SC set out !! , My Quant

Rules for Posting in the Verbal Forum - Rules for Posting in the Quant Forum[/size][/color][/b]

Kudos [?]: 2327 [1], given: 219

Manager
Status: *Lost and found*
Joined: 25 Feb 2013
Posts: 123

Kudos [?]: 124 [0], given: 14

Location: India
Concentration: General Management, Technology
GMAT 1: 640 Q42 V37
GPA: 3.5
WE: Web Development (Computer Software)

### Show Tags

20 May 2013, 14:55
My bad! I missed considering the fact that the models from the individual continents can change places between themselves !

Thanks Zarrolou! The answer will be 48!

Regards,
Arpan
_________________

Feed me some KUDOS! *always hungry*

My Thread : Recommendation Letters

Kudos [?]: 124 [0], given: 14

Re: Permutation/Combination   [#permalink] 20 May 2013, 14:55
Display posts from previous: Sort by

# Permutation/Combination

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.