I just realised that using * twice to represent a power shows up as just a single * - here is the correct version (the numbers are anyway correct): Prob(0 case

I just realised that using * twice to represent a power shows up as just a single * - here is the correct version (the numbers are anyway correct): Prob(0 cases) = (1 - p)^N = 0.9450... Prob(1 case) ~= p * N * (1 - p)^N = 0.0534... Prob(2 cases) ~= (p^2) * (N^2 / 2) * (1 - p)^N = 0.0015... My apologies for that.