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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    
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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
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