CONTEST - Mahjong mysteries solving contest "Sherlock Holmes and Mahjong" starts with Dr. Watson, who is waiting for "Nine Gates" in the bamboo suit. He draws a "tile with a bamboo image" on it as last tile from the wall, and declares "Hu" (a win). To answer the questions of this mystery, you need to consider a typical mahjong game set, and also the "Green Book" (Appendix 1).
Question 1 (): How many "tiles with Bamboo image" are in a typical mahjong set?
Question 2 (): Please, calculate the total change in points for Dr. Watson for each different "tile with Bamboo image" on it in the scenario as described.