V={1,2,3,4,5}E={(1,2),(1,3),(1,5),(2,3),(2,4),(2,5),(4,5)}G={V,E}\begin{aligned}
V &= \left\{ 1,2,3,4,5 \right\} \\
E &= \left\{ (1,2),(1,3),(1,5),(2,3),(2,4),(2,5),(4,5) \right\} \\
G &= \left\{ V,E \right\}
\end{aligned}VEG={1,2,3,4,5}={(1,2),(1,3),(