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4 options (Posted on 2017-07-10) Difficulty: 2 of 5
The members of a group travelling to Venice were offered by their travel agency 4 additional disjoint options of their choice.

Knowing that each option was selected by 80% of the members, what minimal percentage p choose ALL THE 4 OPTIONS?

No Solution Yet Submitted by Ady TZIDON    
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Hints/Tips re: I want it all (spoiler) explained | Comment 2 of 3 |
(In reply to I want it all (spoiler) by Steve Herman)

Your "final" answer is correct<o:p></o:p>

<o:p> However:</o:p>

"The minimum p is achieved when as many members as possible choose 3 out of 4 options. "   - true, BUT WHY?

        Please comment on  the assumption  "if 20%  etc.."

    Symmetry"?

IMHO- There is much simpler explanation...

 


  Posted by Ady TZIDON on 2017-07-10 21:23:33
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