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Wed 31 Aug, 2005 10:23 pm
How many people must you invite to your party to guarantee that there are either
(a). 3 mutual friends or four mutual strangers?
(b). 4 mutual friends or 4 mutual strangers?
I'm not sure if this approach is correct, but:
a) how many pairs can you have before the addition of another person forces you to either form a mutual threesome or have four mutual strangers?
b) same as (a) but with threesomes, foursomes, etc.