Figure $2$: Figure for Problem $2$

Problem $2.$ Consider G $=($V$,$ E$)$ for figure $2$ where V is the vertex$/$nodes and E is the edges. $($Hint: for

example, for V $=\{$a$,$ b$\}$ and the edge would be E $=\{$eba$\}$ by considering the direction$)$

$(1)$ Is G a direct graph or undirected graph?

$(2)$ Which vertice is isolated point?

$(3)$ Compute the in$-$degree and out$-$degree of a$.$