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If two events A and B such that P(A')=0....

If two events `A` and `B` such that `P(A')=0.3`, `P(B)=0.5` and `P(AnnB)=0.3`, then `P(B//AuuB')` is

A

0.6

B

0.32

C

0.31

D

0.28

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