Multiple choice

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.

  1. P only

  2. Q only

  3. Both P and Q

  4. Neither P nor Q

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sum of degrees of all vertices = 2 ×number of edges