객관식
Label the degree and parity (even/odd) of each vertex on each graph.
P = 2-even; Q = 3-odd; R = 3-odd; S = 2-even; T = 3-odd; U = 3-odd
P = 2-even; Q = 3-odd; R = 3-odd; S = 2-even; T = 3-odd; U = 4-even
P = 2-even; Q = 5-odd; R = 8-even; S = 10-even; T = 13-odd; U = 16-even
P = 2-even; Q = 5-odd; R = 8-even; S = 10-even; T = 13-odd; U = 17-odd