, 1, 2, 3, ... with probability $P(X=x) = k(x+1)\left(\frac{1}{5}\right)^x$, where $k$ is consta... following NCERT curriculum." /> , 1, 2, 3, ... with probab..." /> , 1, 2, 3, ... with probability $P(X=x) = k(x+1)\left(\frac{1}{5}\right)^x$, where $k$ is consta... following NCERT curriculum." />