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OpenStudy (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 0.40
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OpenStudy (zarkon):
P(A and B)=P(A)+P(B)-P(A or B)
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