Consider a project with 8 activities: A, B, C, D, E, F, G, and H. The sequence of activities is as follows:

A and B have no predecessors.

Draw the project network (activity on arrow) with the necessary dummies so that 2 activities don't start and finish on the same node.

\begin{tabular}{|c|c|} \hline Actividades & Predecesores \\ \hline C & A \\ \hline E & A,B \\ \hline D & B \\ \hline F & D \\ \hline G & F,E \\ \hline H & C,G \\ \hline I & E,F \\ \hline \end{tabular}