If P(AnnB)=1/2,P( A nn B )=1/3, P(A)=p...

If `P(AnnB)=1/2,P( A nn B )=1/3, P(A)=p , P(B)=2p ,` then find the value of `pdot`

`1/3`

`7/18`

`4/9`

`1/2`

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