All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Just Math
Committee Choice Concern (Posted on 2010-05-17) Difficulty: 3 of 5
A committee of 5 is to be chosen from a group of 9 people.

Determine the total number of ways this can be accomplished, given that:

(i) Harold and Warren must serve together or not at all, and:

(ii) Lucy and Deanna refuse to serve with each other.

No Solution Yet Submitted by K Sengupta    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution re: just counting (corrected) | Comment 2 of 3 |
(In reply to just counting by Ady TZIDON)

Two more cases, in addition to Ady's:

Case 3: HW, not D or L: select another 3 out of 5, ie 10
Case 3': Not HW, not D or L: select 5 out of 5, equal 1

So, previous 30, + 10 + 1 = 41

  Posted by Steve Herman on 2010-05-17 14:42:42
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information