GATE | GATE CS 2013 | Question 25

Which of the following statements is/are TRUE for undirected graphs? 

P: Number of odd degree vertices is even.
Q: Sum of degrees of all vertices is even.

(A) P only
(B) Q only
(C) Both P and Q
(D) Neither P nor Q


Answer: (C)

Explanation: See http://quiz.geeksforgeeks.org/data-structures-graph-question-27/

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