Find the Vertex-Chromatic Number, the Edge-Chromatic Number, and the Region-Chromatic $C _ { 7 }$

Q97: Explain how graphs can be used to

Q98: either give an example or prove that

Q102: Find the vertex-chromatic number, the edge-chromatic

Q104: Draw a cubic graph with 6

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Q109: Find the vertex-chromatic number, the edge-chromatic

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Q127: either give an example or prove that