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How many edges are in K15, the complete graph with 15 vertices.

Any help would be appreciated, thanks.
13 years ago

Answers

Steve
Kn has n(n-1)/2 edges

Think on it. Each of the n vertices connects to n-1 others. But by the time you've connected all n vertices, you made 2 connections for each.
13 years ago
Jajj
13
10 years ago

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