1.5. The four towns A, B, C, and D are connected by railroad lines as shown in the following diagram:

Each day, in whichever town it is in, a train chooses one of the lines out of that town at random and traverses it to the next town, where the process repeats the next day. In the long run, what is the probability of finding the train in town D?

Transcribed Image Text:

A B Figure 1.1 A graph whose nodes represent towns and whose arcs represent railroad lines.