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MathNet 2013 Question 38

Math Olympiad Vault · MathNet 2013

Question 38

There are $2^{2013}$ points on a circle, labeled arbitrarily $1,2,\dots,2^{2013}$, each number appearing once. Prove that one can draw 500 pairwise nonintersecting chords between these points so that the sums of the endpoint labels are all equal.

Question illustration
Schematic only: eight representative points, not the full number in the problem.