The number of edges in a simple, n-vertex, complete graph is
A. n*(n-2)
B. n*(n-1)
C. n*(n-1)/2
D. n*(n-1)*(n-2)
Answer:C
The number of edges in a simple, n-vertex, complete graph is
A. n*(n-2) B. n*(n-1) C. n*(n-1)/2 D. n*(n-1)*(n-2)