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Mutually friendly (Posted on 2002-07-01)

Prove that any group of six people contains either 3 mutual friends or 3 mutual strangers.

(For the purpose of this problem any pair of people must be either friends or strangers.)

See The Solution Submitted by levik

Rating: 3.0000 (5 votes)

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"Myou-tyou-el"

| Comment 7 of 11 |

What do you mean by MUTUAL?

Posted by Tim Axoy on 2003-03-21 12:32:03

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