From a box containing 4 white and 6 black balls , 3 balls are transferred to another empty box. From new box a ball is drawn and it is black . What is the probability that out of 3 balls transferred 2 are white and one black ?
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Expert's answer
2012-11-06T09:35:58-0500
Probability that 2 are white is 2/10 And Probability that 1 is black is 1/10 Thus probability that out of 3 balls transferred 2 are white and one black is 1/10*2/10=2/10
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