1 The course prerequisites for a computer science major at a local college are numbered as follows: 111 is required for 112 and 210; 112 is required for 312, 313, 209, and 211; and 210 is required for...

1 The course prerequisites for a computer science major at a local college are numbered as follows: 111 is required for 112 and 210; 112 is required for 312, 313, 209, and 211; and 210 is required for 312. Draw a directed graph that represents this numbering structure.

2 How many edges are in a complete, undirected graph with six vertices?