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A box contains 8 red, 3 white and 9 blac...

A box contains 8 red, 3 white and 9 black balls. If three balls are drawn at random, find the probability that:
(i) All three balls are of different colour,
(ii) One ball is red and two balls are white.
(iii) All three balls are black.

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The correct Answer is:
(i) `(18)/(95)` (ii) `(2)/(95)` (iii) `(7)/(95)`
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