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 It is given that the events A and B are such that P(A)=14PAB=12,PBA=23 then P(B)=

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a
16
b
13
c
23
d
12

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detailed solution

Correct option is B

PBA=P(A∩B)P(A)⇒ 23=P(A∩B)1/4⇒ P(A∩B)=14⋅23=16PAB=P(A∩B)P(B)⇒12=1/6P(B)⇒ P(B)=1/61/2=26=13


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