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Let A and B be events defined on the same sample space such that P(BC) = 0.4, P(AC ) = 0.5, and P(AnB)= 0.2 then

Let A and B be events defined on the same sample space such that P(BC) = 0.4, P(AC ) = 0.5, and P(AnB)= 0.2 then P(AUB) is equal to O a. 0.9 O b. 0.7 O c. 0 O d. NONE

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