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The probabilities of having a defective...

The probabilities of having a defective toy in three cartons , A , B, C are `(1)/(3), (1)/(4), (2)/(5)` respectively. If a carton is selected at random and a toy drawn randomly from it is found to be defective, then probability that it is drawn from carton B is

A

`(15)/(47)`

B

`(20)/(47)`

C

`(20)/(59)`

D

`(15)/(59)`

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The correct Answer is:
D
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