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ISRO | ISRO CS 2008 | Question 29

  • Last Updated : 12 Jun, 2018

The maximum number of edges in a n-node undirected graph without self loops is
(A) n2
(B) n * (n-1)/2
(C) n – 1
(D) (n + 1) * n/2

Answer: (B)

Explanation: A complete graph can have a maximum edges for ‘n’ nodes as each node is connected to every other node. So, for n nodes, maximum n * (n-1)/2 nodes are possible.

Option (B) is correct.

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