Ononot — Suppose P(A) = 0.5, P(B) = 0.4, and P(A \cup B) = 0.7. Find

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Probability Basicshard

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Suppose $P(A) = 0.5$ , $P(B) = 0.4$ , and $P(A \cup B) = 0.7$ . Find the probability that exactly one of the events $A$ or $B$ occurs.