Determine whether simple graph can be colored using n color

Reference no: EM131166963

a) Explain how backtracking can be used to determine whether a simple graph can be colored using n colors.

b) Show, with an example, how backtracking can be used to show that a graph with a chromatic number equal to 4 cannot be colored with three colors, but can be colored with four colors.

Reference no: EM131166963

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