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Urn III: \( \quad 2 \) white, 2 black

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Q1
Urn I contains 3 white, 2 black and 2 green balls, Urn II contains 2 white, 3 black and 4 green balls, Urn III contains 5 white, 2 black and 2 green balls. An urn is chosen at random and two balls are drawn, they happen to be black and green. Probability that they come from Urn II is:
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Q2
The contents of urns I, II, III are as follows:
Urn I : 1 white, 2 black and 3 red balls
Urn II : 2 white, 1 black and 1 red balls
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One urn is chosen at random and two balls are drawn. They happen to be white and red. What is the probability that they come from Urns I, II, III?
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Q3
The content of urns I, II, III are as follows:
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