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Box A contains 2 black and 3 red balls ,...

Box A contains 2 black and 3 red balls , while box B contains 3 black and 4 red balls . Out of these two boxes one is selected at random and the probability of choosing bos A is double that of box B . If a red ball is drawn from the selected box , then the probability that it has come from box B, is

A

`(21)/(41)`

B

`(10)/(31)`

C

`(12)/(31)`

D

`(13)/(41)`

Text Solution

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The correct Answer is:
B
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