Let X and Y be has stationary independent random variables

Let X and Y be has stationary independent random variables uniformly distributed in the ranges (– 1, 1) and (– 2, 1) respectively. If Z = X + Y, then the probablity that Z < – 2 is—

Given, random variable x lies in the range (– 1, 1) and y lies in the range (– 2, 1) i.e.

then P(z ≤ – 2) = 0