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andijo76
If P(A or B) = 0.7, P(A) = 0.3 and P(B) = 0.8, determine P(A and B). 0.21 0.56 0.10 or 0.40
\[P(A \cup B)=P(A)+P(B)-P(A\cap B)\] you know every number but \[P(A\cap B) so you can solve for it. is that ok?