Let G be a non-planar graph with the minimum possible number of edges. Then G has
| A. | 9 edges and 5 vertices |
| B. | 9 edges and 6 vertices |
| C. | 10 edges and 5 vertices |
| D. | 10 edges and 6 vertices |
Answer : B Explanation : Any non-planar graph has K5 or K3,3 as a subgraph. Both these subgraphs are non-planar. K5 has 5 vertices and 10 edges. K3,3 has 6 vertices and 9 edges. Since we are interested in the non-planar with the fewest number of edges, option (B) is the correct choice. |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
