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State a general theorem about dominoes

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Question: Dominoes. Can you arrange the 28 dominoes of an ordinary set in a closed loop, so that each matches with its neighbor in the usual way? Can you do so if all dominoes with a 6 on them are removed? Can you state a general theorem about dominoes with numbers 0,1 , .. . , n on them? (Hint: consider each domino as an edge of a graph with vertices labeled 0, 1, . . . ,n.)

Reference no: EM131636864

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