Ononot — In a bipartite graph G = (V1 \cup V2, E), every vertex in V1

Graph Theorymedium

0:00.0

In a bipartite graph $G = (V_1 \cup V_2, E)$ , every vertex in $V_1$ has degree $4$ , and every vertex in $V_2$ has degree $6$ . If $|V_1| = 12$ , what is the size of $|V_2|$ ?