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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)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(3): IQ Test

| Comment 5 of 11 |

(In reply to re(2): IQ Test by TomM)

>Bill and Dave are friends
>Bill and Ed are strangers
>Carl and Dave are strangers
>Carl and Ed are friends.

Poor Abe :)

Posted by levik on 2002-07-02 11:56:51

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