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ISRO | ISRO CS 2009 | Question 80

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If G is a graph with e edges and n vertices, the sum of the degrees of all vertices in G is
(A) e
(B) e/2
(C) e2
(D) 2 e


Answer: (D)

Explanation: Since the given graph is undirected, every edge contributes as twice in sum of degrees. So the sum of degrees is 2e.

Option (D) is correct.

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Last Updated : 06 Jun, 2018
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