Subtotals can be used in an Excel table.

What would you call an automatic device that performs functions ordinarily executed by human beings or that operates with what appears to be almost human intelligence?

A) computer B) inference engine C) robot D) simulation device E) none of the above

Answer the following statements true (T) or false (F)

1. A connected graph has an edge between every pair of vertices. 2. A connected graph can have a pair of vertices without an edge between them. 3. Each edge in a graph cannot begin and end at the same vertex. 4. In a digraph, each pair of vertices may be joined by only one edge. 5. The adjacency matrix for an undirected graph is symmetrical.