6. Find the chromatic number of each of the following graphs: (i) C7 (the cycle on 7 vertices), (ii) C8, (iii) a bipartite graph with at least one edge, (iv) a tree with n > 1 vertices
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(i) For the cycle on 7 vertices, we can color the vertices alternatively with two colors, but since there are an odd number of vertices, the last vertex will have the same color as the first vertex, which is adjacent to it. Show more…
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