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

 It is currently 06 May 2015, 21:04

### 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

# 6 person sit around a table. In how many ways can they sit

Author Message
TAGS:
Director
Joined: 10 Oct 2005
Posts: 531
Location: US
Followers: 1

Kudos [?]: 13 [0], given: 0

6 person sit around a table. In how many ways can they sit [#permalink]  26 May 2006, 03:50
6 person sit around a table. In how many ways can they sit so that no person has the same neighbors?
Director
Joined: 05 Feb 2006
Posts: 902
Followers: 1

Kudos [?]: 51 [0], given: 0

this one is a bit tricky...

Does the question asks for number of ways to sit so that no person has any two or one of the same neighbours?
Intern
Joined: 23 Feb 2006
Posts: 40
Followers: 0

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

Should be (n-1)!=5!
Manager
Joined: 10 May 2006
Posts: 186
Location: USA
Followers: 1

Kudos [?]: 3 [0], given: 0

Can someone explain how you got to the answer? Or is this a straight formula you memorized?
Senior Manager
Joined: 08 Jun 2004
Posts: 499
Location: Europe
Followers: 1

Kudos [?]: 20 [0], given: 0

tl372 wrote:
Can someone explain how you got to the answer? Or is this a straight formula you memorized?

http://www.ilovemaths.com/3permcirc.htm
Manager
Joined: 10 May 2006
Posts: 186
Location: USA
Followers: 1

Kudos [?]: 3 [0], given: 0

Great! Thanks M8.

I wonder how often people have seen circular permutations on the exam...
CEO
Joined: 20 Nov 2005
Posts: 2913
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 18

Kudos [?]: 123 [0], given: 0

Its (n-1)!/2 i.e 60. But I calculated using another lengthy method.
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

Similar topics Replies Last post
Similar
Topics:
In how many ways can be 6 boys and 6 girls sit around circular table 1 22 Jan 2015, 06:52
5 If we have 8 people in a meeting, in how many ways they can sit around 14 14 Apr 2011, 03:25
6 7 people sit at the round table. In how many ways can we 16 08 Feb 2011, 04:05
In how many ways can N couples (husband and wife) sit around 3 18 Jul 2007, 11:36
In how many different ways can 4 teachers and 4 students sit 3 01 Jun 2005, 03:38
Display posts from previous: Sort by