Each of six Urns contains black and white balls: one has eight white and 4 black balls, two have six white and 6 black balls and three have 4 white and 8 black balls. An Um is drawn at random, and 3 balls are drawn without replacement form that Um. Two of the three are white and the other is black. What is the probability that the Urn drawn contained 4 white and 8 black balls?
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Serine | C3H7NO3 | CID 5951 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, .
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