Question
For which values of $n$ is the complete graph on $n$ vertices a tree?
Step 1
A complete graph on n vertices has an edge between every pair of vertices. For n = 1, there is only one vertex and no edges, so it is a tree. For n = 2, there are two vertices and one edge between them, so it is a tree. For n = 3, there are three vertices and Show more…
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