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Unformatted text preview: k + 1. Problem 3: Let G n be the graph where the vertices consist of all binary strings of length n , and two strings are adjacent if they dier in exactly two positions. Show that G n is not connected (for n 1), and not bipartite (for n 3). How many vertices and edges does G n have? 1...
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 Spring '09
 M.PEI
 Math

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