Question: * A and B are two events such that P(A|B)=P(B|A) * P(AB)=1/3 and P(AB)>0 * A and B are not necessarily mutually exclusive Prove that

* A and B are two events such that P(A|B)=P(B|A)

* P(AB)=1/3 and P(AB)>0

* A and B are not necessarily mutually exclusive

Prove that P(A)>1/6.

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