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If A and B are two events and A ne phi, ...

If A and B are two events and `A ne phi, B ne phi` then

A

P(A|B) = P(A).P(B)

B

`P(A|B) = (P(A cap B))/(P(B))`

C

P(A|B).P(B|A) =1

D

P(A|B) + P(A)|P(B)

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The correct Answer is:
B
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