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For k = 1, 2, 3, the box `B_(k)` contains k red balls and (k + 1) white balls. Let `P(B_(1)) = 1/2` , `P(B_(2)) = 1/3` and `P(B_(3)) = 1/6`. A box is selected at random and a ball is drawn from it. If a red ball is drawn, then the probability that it has come from box `B_(2)`, is

A

`(35)/(78)`

B

`(14)/(39)`

C

`(10)/(13)`

D

`(12)/(13)`

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-PROBABILITY -Chapter Test
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  18. For k = 1, 2, 3, the box B(k) contains k red balls and (k + 1) white b...

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