1.

यदि A और B दो घटनाएं इस प्रकार है कि `P(A//B) = P(B//A) ne 0` तब:A. `A sub B`B. `A=B`C. `A cap B = infty`D. `P(A) = P(B)`

Answer» ( d) यहाँ, `P(A/B) = P(B/A)`
`therefore (P(A cap B))/(P(B)) = (P(B cap A))/(P(A)) rArr P(A) = P(B)`
`[therefore P(A cap B) = P(B cap A)]`


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