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An urn contains 12 blue, 6 yellow, and 9 black balls. Two balls are drawn at...

An urn contains 12 blue, 6 yellow, and 9 black balls. Two balls are drawn at random.


i. What is the probability that two black balls are drawn in succession when chosen without replacement? Give your answer correct to 3 decimal places.


ii. What is the probability that two black balls are drawn in succession when chosen with replacement? Give your answer correct to 3 decimal places.

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