Suppose we have four boxes. A, B, C and D containing coloured marbles as given below: Воx Marble colour Red White Black A 1 6 3 B 6 2 2 8 1 1 D 6 4 One of the boxes has been selected at random and a single marble is drawn from it. If the marble is red, what is the probability that it was drawn from box A?, box B?, box C?
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