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Mathematics, 24.03.2020 17:04 tajanaewilliams77

[Japan 1998] Let n be a positive integer. At each of 2n points around a circle we place a disk with one white side and one black side. We may perform the following move: select a black disk, and flip over its two neighbors. Find all initial configurations from which some sequence of such moves leads to a position where all disks but one are white.

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[Japan 1998] Let n be a positive integer. At each of 2n points around a circle we place a disk with...
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