ROSECODE 216
Girls and boys
At school, little boys are mischievous: they pull girls' hair, they kick. Girls don't like boys and prefer to be with girls.
In a classromm a teacher decides to place children in row in such a way that each girl gives the hand to at least one other girl.
B G G B - good
B G B G - not good
How many possibilities are there in a classroom with 40 children
In a classromm a teacher decides to place children in row in such a way that each girl gives the hand to at least one other girl.
B G G B - good
B G B G - not good
How many possibilities are there in a classroom with 40 children