A discrete random variable X has the following probability distribution: X: 0 1 2 3 4 5  P(X):   b   3b   5b   3b   4b   6b  The value of b is:

$\frac{1}{25}$ $\frac{1}{5}$ $\frac{1}{22}$ 1

$\frac{1}{22}$

The correct answer is Option (3) - $\frac{1}{22}$