Pokemon HG/SS is pretty hard to complete. at the end u have to defeat Red and then u get another 2 starters :) Red is hard though i did it within 1 go :P and the league is hard to i didn't do that in 1 go though :P Hope this helped.

sht stains?

We have to use the expression P(X=x) = nCx px (1--p)(n--x)

Here n = n and p=p and x = 1 or x>1

P(X>/=1) = 1 -- P(X</=1)

So, P(X<=1) = P(X=0) + P(X=1)

This gives nC0 p0 (1--p)(n-0)+ nC1 p1 (1--p)(n--1)

ie (1--p)n + n p (1--p)(n--1)

it is easy just complete it. :P