Box A contains 5 black marbles and 4 white marbles, and Box B contains 3 black marbles and 2 white marbles. A box is chosen at random and marble is drawn. If the marbles drawn is white, another marble is drawn from the same box. If the marble drawn is black, a marble is drawn from the other box. a) What is the probability that both marbles are white? b) If both marbles drawn are white, what is the probability that they come from box A? c) What is the probability that both marbles are black? please answer in complete solution

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