<p dir="ltr">Please use Discrete Mathematics methods only.Thanks.</p><p dir="ltr"><img src="https://media.cheggcdn.com/media%2Fc50%2Fc509eac8-14ca-45d7-a944-17d3dd1ddd7a%2Fimage" alt="4. Consider a digraph with vertices vi, V2, ?» and v4. The adjacency matrix for the digraph is: 121 0 2