10. Two of the graphs in Figure 1.25 are isomorphic. FIGURE 1.25 (a) For the pair…

10. Two of the graphs in Figure 1.25 are isomorphic. FIGURE 1.25 (a) For the pair that is isomorphic, give an appropriate one-to-one corre- spondence (b) Prove that the remaining graph is not isomporhic to the other two