Sociology homework help. The level of difficulty of these problems varies wildly. Some are entirely appropriate for a high school course. Others definitely inappropriate. Although problems are categorized by topics, this should not be taken very seriously. Problem 3 (5 points). Consider the following directed graph D: it (See Chapter 2.3 of the textbook.) (a) Find the adjacency matrix A of D.(b) Compute A3. How many paths of length three are there that start in 712? How manypaths of length three are there that end in v2?