Page 9 of 10 VVS: 30-2 A3 Summer 13. Mr. Osterhold, the Physical Education teacher at Vista Virtual School, is having his PE20 class plan a floor hockey tournament. The class has been told they can invite other schools to play, and they can schedule 72 round robin games in total with each team playing twice a. Determine the maximum number of teams that can enter the tournament. (1 mark) b. Mr. Osterhold must pick three students from his PE20 class to present trophies to the top three floor hockey teams in the tournament. There are 21 students in his class. Determine, as an exact value, the probability that Kelly and his two friends, Dom and Bryan, will hand out trophies to the winning teams. (2 marks)