Question

If a d.r.v. X takes values 0, 1, 2, 3, … with probability P(X = x) = k(x + 1) × 5^–x, where k is a constant, then P(X = 0) = ______

Options

• `7/25`

• `16/25`

• `18/25`

• `19/25`

Answer 1

`16/25`