PLEASE do not copy an already posted answer! Please use the
pigeonhole principle!
3. Suppose that all of the points of the plane with integer coordinates are colored red, blue, or green. Prove that there will be a rectangle whose vertices all have the same color. (neat solution!)
PLEASE do not copy an already posted answer! Please use the pigeonhole principle!
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answerhappygod
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PLEASE do not copy an already posted answer! Please use the pigeonhole principle!
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