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two urn contain respectively 3 white, 7 red, 15 black and 10 white ,6 red and 9 black balls. one ball is drawn from each urn.
1. 1 answer
2. 438 views
two urn contain respectively 3 white, 7 red, 15 black and 10 white ,6 red and 9 black balls. one ball is drawn from each urn.
1. 1 answer
2. 556 views
two urn contain respectively 3 white, 7 red, 15 black and 10 white ,6 red and 9 black balls. one ball is drawn from each urn.
1. 1 answer
2. 529 views

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