ISRO2009-52

Question

If $\text{G}$ is a graph with e edges and n vertices the sum of the degrees of all vertices in $\text{G}$ is

• A. $e$
• B. $e/2$
• C. $e^2$
• D. $2 e$

Answer 1

Ans D) 2e

sum of degrees of all vertices in G = 2 E