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9. A bag contains 12 white and 18 black balls. Two balls are drawn in succession without replacement, what is the probability that the two

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9. A bag contains 12 white and 18 black balls. Two balls are drawn in succession without replacement, what is the probability that the two balls are (a) both black? (2 marks) (b) of same color? (2 marks) (c) of first is white and second is black? (2 marks)

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