SOLUTION: Suppose events A and B are such that P(A) = .4 and P(B) =.3. If A and B are mutually exclusive find P (A u B)

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Question 1009678: Suppose events A and B are such that P(A) = .4 and P(B) =.3. If A and B are mutually exclusive find P (A u B)
Answer by fractalier(6550) About Me  (Show Source):
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P(A or B) = P(A) + P(B) - P(A)*P(B) = .4 + .3 - .12 = .58