perm or comb? ps : PS Archive
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 04 Dec 2016, 18:35
GMAT Club Tests

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

perm or comb? ps

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Director
Director
avatar
Joined: 17 Oct 2005
Posts: 932
Followers: 1

Kudos [?]: 196 [0], given: 0

perm or comb? ps [#permalink]

Show Tags

New post 18 Jan 2006, 10:20
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (01:41) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

There are 3 employees in a certain small company. How many ways can they shake hands with each other?
Director
Director
avatar
Joined: 17 Dec 2005
Posts: 548
Location: Germany
Followers: 1

Kudos [?]: 38 [0], given: 0

 [#permalink]

Show Tags

New post 18 Jan 2006, 10:38
Hey Joe

it's a Combinations problem

3C2=3

In how many ways can thre employes shake 2 hands.
Director
Director
avatar
Joined: 17 Oct 2005
Posts: 932
Followers: 1

Kudos [?]: 196 [0], given: 0

 [#permalink]

Show Tags

New post 18 Jan 2006, 11:23
thanks allabout,

oa is 3
Senior Manager
Senior Manager
avatar
Joined: 05 Jan 2006
Posts: 382
Followers: 1

Kudos [?]: 83 [0], given: 0

 [#permalink]

Show Tags

New post 18 Jan 2006, 13:31
Yep this is easy C(3,2) = 3 (A shake hand with B or B with A are same so combination...)
CEO
CEO
User avatar
Joined: 20 Nov 2005
Posts: 2911
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 23

Kudos [?]: 267 [0], given: 0

 [#permalink]

Show Tags

New post 18 Jan 2006, 16:06
I did this way.

Total Number of ways = 3 * 3 - 3(One can not shake hand with himself) = 6

Now divide it by two because A shaking hand with B and B shaking with A is same.

So final = 6/2 = 3
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

  [#permalink] 18 Jan 2006, 16:06
Display posts from previous: Sort by

perm or comb? ps

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.