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MathNet 2001 — Part 01 Question 54

Math Olympiad Vault · MathNet 2001 — Part 01

Question 54

We consider the following 27 points of a cube: the center (1), the centers of the faces (6), the vertices (8) and the centers of the edges (12). We color each of those points blue or red. Can it be made so that there are no three dots of the same color aligned? Prove it.