Question: Suppose a communications system is designed with K circuits so that if one is in use another can be chosen. Assume j circuits are in

Suppose a communications system is designed with K circuits so that if one is in use another can be chosen. Assume j circuits are in use and a circuit is chosen at random (without replacement) until a circuit not in use is selected.

(a) What is the chance that at least two selections are required?

(b) What is the chance that exactly two selections are required?

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