Last year, 32 teams participated in a basketball tournament. This year, the number of teams participating has increased by 25%.
How many teams are participating this year?

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.