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If A, B are any two events of a random experiment and $\mathrm{P}(\mathrm{B}) \neq 1$, then $\mathrm{P}\left(\mathrm{A} \backslash \mathrm{B}^{\mathrm{C}}\right)=$
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The correct answer is:
$\frac{\mathrm{P}(\mathrm{A})-\mathrm{P}(\mathrm{A} \cap \mathrm{B})}{1-\mathrm{P}(\mathrm{B})}$
$P\left(A / B^c\right)=\frac{P\left(A \cap B^c\right)}{P\left(B^c\right)}=\frac{P(A)-P(A \cap B)}{1-P(B)}$
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