Statement of the problem:

Discrete random variable x is described by the PDF:

px(xo) = (5-xo)/12 if xo = 0,1,2

px(xo) = 0 otherwise

let d1, d2, d3,...dN represent N successive independent experimental values of random variable x.

Determine the probability that d1>d2

Determine the probability that d1+d2+...dN <= 1.0