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Let the set \( A \) and \( B \) are two events associated with
\( \mathrm{P} \) a Sample space. Then which of the following

W notation is not correct?
(1) The event ' \( A \) or \( B \) ' \( \rightarrow \mathrm{A} \cup B \)
(2) The event ' \( A \) or \( B \) ' \( \rightarrow \mathrm{A} \cap B \)
(3) The event ' \( A \) or \( B \) ' \( \rightarrow \mathrm{A}-B \)
(4) The event ' \( A \) but Not \( B \) ' \( \rightarrow B-A \cap A \)
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