Question: Graph Theory Let G be a graph with 5 (non-empty) independent sets, V1,V2,...,V5. Suppose that the subgraph induced by taking the vertices of any pair

Graph Theory

Let G be a graph with 5 (non-empty) independent sets, V1,V2,...,V5. Suppose that the subgraph induced by taking the vertices of any pair (Vi,Vj) of the indepen- dent sets is a complete bipartite graph. What is the chromatic number of G?

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