Question 25
There are 25 boys in a class, 16 of whom are members of the football team, 12 in the basketball team and 10 in the volleyball team. It is known that no one participates in all three sports at the same time, and each boy participates in at least one team. If five boys participate in both the football and basketball teams, and three boys participate in both the basketball and volleyball teams. How many boys are there that participate in both the football and volleyball teams?