At the Ohio Scottish Games, a large number of beginning bagpipers are standing with their class in a circle on the grass. The class members count off. You are standing right behind the girl who calls out #16, and you observe that the boy directly across the circle from her is #47. How many members are in the class?
There are 31 class members in the half circle from #16 to #47, so there must be 62 members in the class altogether.