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If P(A)=2/5,\ P(B)=3/(10)a n d\ P(AnnB)=...

If `P(A)=2/5,\ P(B)=3/(10)a n d\ P(AnnB)=1/5,` then `P( A // B )P( B // A )` is equal to `5/6` b. `5/7` c. `(25)/(42)` d. `1`

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