An urn contains 9 red, 7 white and 4 bla...

An urn contains 9 red, 7 white and 4 black balls. If two balls are drawn at random, find the probability that: both the balls are red, (ii) one ball is white (iii) the balls are of the same colour (iv) one is white and other red.

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The correct Answer is:

`63/(190)`

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