Mathematics, 24.06.2020 21:01, lalacada1

If P(A)=0.4, P(A and B)=0.2,and P(A or B)=0.5, What is P(B)

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If P(A)=0.4, P(A and B)=0.2,and P(A or B)=0.5, What is P(B)...

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