Question: 4a. Can there be a planar graph with 10 edges and 5 vertices? Explain 4b. Can there be a graph with five vertices, each with

4a. Can there be a planar graph with 10 edges and

4a. Can there be a planar graph with 10 edges and 5 vertices? Explain 4b. Can there be a graph with five vertices, each with degree three? Explain For which n does the complete graph K, have an Euler cycle? Explain, 4c

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