The odds against an event \( A \) is \( 2: 3 \) and odds in favour of another event \( B \) is \....

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The odds against an event \( A \) is \( 2: 3 \) and odds in favour of another event \( B \) is \( 1: 2 \). If \( A \) and \( B \) are independent and \( P(A \cup B)=m / n \), then \( |m-n| \) is
(Here \( m \)
\( \mathrm{P} \)
and \( n \) do not have proper common divisor.)


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