Mathematics - Probability Question with Solution | TestHub

If$\mathrm{A}$and$\mathrm{B}$are any two events such that$P\left(A\right)=\frac{2}{5}$and$P\left(A\cap B\right)=\frac{3}{20},$then the conditional probability,$P\left(A|\left(A^{\prime }\cup B^{\prime }\right)\right),$where${\mathrm{A}}^{\text{'}}$denotes the complement of$\mathrm{A}$, is equal to :