PRC-2 · Chapter 11 · Question 1 of 60
If events A and B are strictly mutually exclusive, and P(A) = 0.5 and P(B) = 0.4, what is the probability of either A or B occurring, denoted as P(A or B)?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) 0.9
Explanation
Because the events are mutually exclusive and cannot happen at the same time, the probability of A or B occurring is simply the sum of their individual probabilities: 0.5 + 0.4 = 0.9.
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