NCERT Miscellaneous Exercise Q6 - Probability
Question: Four boxes A, B, C, D contain coloured marbles as in the table (A: 1 red, 6 white, 3 black; B: 6 red, 2 white, 2 black; C: 8 red, 1 white, 1 black; D: 0 red, 6 white, 4 black). A box is selected at random and a marble drawn is red. Find the probabilities that it came from box A, box B and box C.
Answer: P(A|red)=1/15, P(B|red)=2/5, P(C|red)=8/15.
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