\begin{tabular}{|l|l|} \hline \begin{tabular}{l} a. How many different paths are there through the network? (15 \\ points) \end{tabular} & \\ \hline b. What is the number of the last node in the network? (15 points) & \\ \hline c. What is the difference in hours taken for the two paths when they & \\ connect at node 10. (15 points) & \\ \hline d. What is the difference in hours taken for the two paths when they & \\ \hline connect at node 12. (15 points) & \\ \hline e. What is the expected duration of the entire project? (15 points) & \\ \hline f. What is the critical path? Separate each node with a dash (-). & (12.5 points) \\ \hline \end{tabular}