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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, (i) both the balls are red (ii) one ball is white, (iii) the balls are of the saime colour (iv) one is white and other red.

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V PUBLICATION-PROBABILITY-QUESTION BANK
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  13. In a lottery of 50 tickets numbered from 1 to 50,two tickets are drawn...

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