Question 3
Five directors want as few photographs as possible, with each director appearing in at least one. Their availability and the photographer’s availability are shown.
Alam:15:00–17:05; Bob:12:00–16:00; Cecilia:13:00–14:05; Denise:14:00–17:05; Erik:17:00–18:00; photographer:12:00–20:00. What is the minimum number of photographs?
Alam:15:00–17:05; Bob:12:00–16:00; Cecilia:13:00–14:05; Denise:14:00–17:05; Erik:17:00–18:00; photographer:12:00–20:00. What is the minimum number of photographs?