A parachutist lands on the line connecting 2 towns a and b, Ask an Expert

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A parachutist lands on the line connecting 2 towns, A and B. Suppose that the point at which he lands obeys a uniform probability law over the line. What is the probability that the rat.io of his distance from A to his distance from B will be (i) greater than 3, (ii) equal to 3, (iii) greater than R, where R is a given real number?

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