A discrete RV XXX has PMF P(X=k)=6π2k2P(X = k) = \frac{6}{\pi^2 k^2}P(X=k)=π2k26 for k=1,2,3,…k = 1, 2, 3, \ldotsk=1,2,3,…. What is P(X≤2)P(X \le 2)P(X≤2)?
6π2\frac{6}{\pi^2}π26
304π2\frac{30}{4\pi^2}4π230
54\frac{5}{4}45
5π236\frac{5\pi^2}{36}365π2