What is the minimum number of colors required for the


1. Is the following a graph? Explain.

1170_Graph.png

2. The vertices of the following graph are to be colored so that the adjacent vertices will not have the same color. Find the chromatic number of the following graph.

383_Graph1.png

3. What is the minimum number of colors required for the following graph so that the adjacent regions with a common boundary other than a point are to have different colors?

1869_Graph2.png

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Algebra: What is the minimum number of colors required for the
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