A discrete random variable has a PMF defined by P(X=n)=12nP(X=n) = \frac{1}{2^n}P(X=n)=2n1 for n=1,2,3,…n=1, 2, 3, \dotsn=1,2,3,…. What is P(X>2)P(X > 2)P(X>2)?
1/21/21/2
1/41/41/4
1/81/81/8
1/161/161/16