testing header
Math Goodies is a free math help portal for students, teachers, and parents.
Free Math
Newsletter
 
 
Interactive Math Goodies Software

Buy Math Goodies Software
testing left nav
Math Forums @ Math Goodies
Math Forums @ Math Goodies
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 Parent Forum
 Parent's Place
 PERMUTATIONS AND COMBINATIONS - HELP PLEASE
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

raghu
Senior Member

USA
37 Posts

Posted - 10/10/2010 :  10:14:45  Show Profile  Reply with Quote
If mixed doubles tennis matches are to be arranged between 7 couples and if no husband and wife want to be in the pair how many ways can you set up the teams?
Go to Top of Page

Subhotosh Khan
Advanced Member

USA
9117 Posts

Posted - 10/11/2010 :  19:56:45  Show Profile  Reply with Quote
quote:
Originally posted by raghu

If mixed doubles tennis matches are to be arranged between 7 couples and if no husband and wife want to be in the pair how many ways can you set up the teams?



Raghu - how is it that you never share your work/thought?

We do not know where to begin to help you.

Hint - Each husband can be teamed up with how many wives?

Please share your work with us, indicating exactly where you wre stuck - so that we may know where to begin to help you.


Go to Top of Page

raghu
Senior Member

USA
37 Posts

Posted - 10/11/2010 :  21:30:09  Show Profile  Reply with Quote

Subhotosh,
This is my thought.
2 out of 7 men can be permuted in 7p2 ways and 5p2 for women. Once you choose 2 men and 2women, you can have 4 teams.
Therefore 4 * 7p2*5P2.
This is my thinking.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Math Forums @ Math Goodies © 2000-2004 Snitz Communications Go To Top Of Page
This page was generated in 0.24 seconds. Snitz Forums 2000
testing footer
About Us | Contact Us | Advertise with Us | Facebook | Blog | Recommend This Page




Copyright © 1998-2014 Mrs. Glosser's Math Goodies. All Rights Reserved.

A Hotchalk/Glam Partner Site - Last Modified 21 May 2014