Two houses with an x

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I think most around here will know the answer to the house with the x in the middle, which you have to draw with one line, but there also is a puzzle in which you have to draw two of them next to eachother in one line. Is this possible? And if not, can you prove why it isnt possible?

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Posted · Report post

For the existence of Eulerian trail it is necessary that no more than two vertices have an odd degree.

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