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A bag contains 8 red, 3 white and 9 blue balls. If three balls are drawn at random, determine the probability that (i) all three balls are blue balls

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A bag contains 8 red, 3 white and 9 blue balls. If three balls are drawn at random, determine the probability that (i) all three balls are blue balls (ii) all the balls are of different colours. Select the correct answer from above options

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Pobability(all three balls are blue balls)=`.^(9C_3)/.^(20C_3)` Probability all balls are of different colors=`(.^(9C_1)xx.^(8C_1)xx.^(3C_1))/(.^(20C_3))`

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