Let A and B be two events such that `P(A)=0.3` and `P(AuuB)= 0.8`. If A and B are independent events, then `P(B)=`

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Let A and B be two events such that `P(A)=0.3` and `P(AuuB)= 0.8`. If A and B are independent events, then `P(B)=`

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