Problems Worth Solving
In a well-run computer course, the student does many exercises. He should also do at least one problem. The distinction is this: An exercise relates to a specific technique, and the approach is usually spelled out. A problem, on the other hand, will involve a broad goal, using many techniques, and with very little spelled out.—Fred Greunberger (RAND) and George Jaffray (Los Angeles Valley College), Problems for Computer Solution (John Wiley, 1965), page xv.