Question #17898

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 ?

Expert's answer

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

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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