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It is given that the events A and B are such that `P(A)=(1)/(4),P(A//B)=(1)/(2) and P(B//A)=(1)/(3)` then `P(B)=`………..

A

`(1)/(6)`

B

`(1)/(3)`

C

`(2)/(3)`

D

`(1)/(2)`

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