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For mutually exclusive A and B, P(A) = 0.3 and P(B) = 0.45. P(A or B) is
A0.135
B0.15
C0.85
D0.75
Answer & Solution
Correct answer: D. 0.75
With no overlap the probabilities simply add, giving 0.3 + 0.45 = 0.75.
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