$3n+1$ people are to be divided into 3 committees, in such a way that every committee must have at least one member, and no person can serve on all three committees. In how many ways can they be divided?
$3n+1$ people are to be divided into 3 committees?
3
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combinatorics
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1Do the committees have a label/name? – 2012-03-28
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0Good question, but not in the MSE sense. – 2012-03-28
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0http://www.youtube.com/watch?v=uEx5G-GOS1k – 2012-03-28
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1So you're applying for [PROMYS](http://www.promys.org)? – 2012-03-28