The number of even nodes in the network of the figure is:
3.
5.
7.
2.
The figure is a network; the number of arcs is:
4.
The transversal network in the following is:
C.
D.
B.
A.
In the figure, represents a network. The number of vertices are:
1.
The figure, is a network.
The number of arcs is:
