a) If 2 berries are pulled in sequence, what is the probability that the first is red, and the second is not red, if the first was replaced? b) If 2 berries are picked in sequence, what is the probability that the first is a green and the second is a black one? The first berry picked is not replaced. c) If 3 berries are picked in sequence, what is the final probability, if the first picked is a green and is not replaced, then a red is picked, the red is replaced and finally a black is picked.

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