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2 colors (Posted on 2003-04-27) Difficulty: 2 of 5
A painter went to a single mathematical plane, and colored every single point on that plane one of two colors.

Prove that there exist two points on the plane that are exactly one meter apart and have the same color.

See The Solution Submitted by Jonathan Waltz    
Rating: 2.1818 (11 votes)

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re: solution | Comment 2 of 9 |
(In reply to solution by Charlie)

Nice!

I would not have thunk of solving this one with the pigeon-hole principle :)
  Posted by levik on 2003-04-27 17:33:01

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