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QUESTION
A box contains 1 black ball and 1 white ball. a ball is drawn at random, then replaced in the box with an additional ball of the same color.
A box contains 1 black ball and 1 white ball. a ball is drawn at random, then replaced in the box with an additional ball of the same color. then a second ball is drawn at random from the three ball in the box. what is the probability that the first ball drawn was white, given that at least one to the two balls drawn was white?
