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If P(A)=3//10 , P(B=2//5) and P(AuuB)=3/...

If `P(A)=3//10` , `P(B=2//5)` and `P(AuuB)=3//5` then `P(A//B)+P(B//A)` equals `1//4` b. `7//2` c. `5//12` d. `1//3`

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