# Probability of the distance between the two points on a line.

Two points are selected randomly on a line of length L so as to be on opposite sides of the midpoint of the line.

In other words, the two points X and Y are independent random variables such that X is uniformly distributed over (0, L/2) and Y is uniformly distributed over (L/2, L).]

Find the probability that the distance between the two points is greater than L/3.

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