Question 3
Five company directors want souvenir photographs with each director appearing in at least one photo. To save money, they want as few photos as possible. Their availability and the photographer’s are shown.
English translation: 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 photos?
English translation: 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 photos?