if P(A)=1/2 , P(B)=0 then find P(A/B).
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Answer is 0(zero); as this is conditional Probability that "Probability of A that B already occur". here event B is not occur since Probability of A/B is zero. Can also proved by P[A/B] = P[A Intersection B] / P[B] P[A/B] = 0/0 = 0 As there is no Common in A & B because B Probability is zero.
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