Question 6
At the Bebras festival, each beaver brings a pillow as a pretend-battle weapon. Pillow patterns determine teams. Each team has exactly three members. If more than three beavers have the same pattern, only three lucky beavers play and the rest cannot. If fewer than three have a pattern, none of them play. The pillows are shown below.
How many beavers cannot play?
How many beavers cannot play?