If \( A \) and \( B \) are two events, the probability that exactly one of them occurs is given ...

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If \( A \) and \( B \) are two events, the probability that exactly one of them occurs is given by
(A) \( P(A)+P(B)-2 P(A \cap B) \)
(B) \( P\left(A \cap B^{\prime}\right)-P\left(A^{\prime} \cap B\right) \)
(C) \( P(A \cup B)+P(A \cap B) \)
(D) \( P\left(A^{\prime}\right)+P\left(B^{\prime}\right)+2 P\left(A^{\prime} \cap B^{\prime}\right) \)
\( \mathrm{P} \)
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