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If P(A) = 1/5, P(B) = 0, then what will be the value of P(A|B)?(a) 0(b) 1(c) Not defined(d) 1/5I got this question in exam.I want to ask this question from Conditional Probability in section Probability of Mathematics – Class 12

Answer»

Right answer is (c) Not defined

The BEST I can explain: We KNOW that P(A|B) = P(A∩B) / P(B). (By formula for conditional probability)

The value of P(B) = 0 in the GIVEN question. As the value of denominator BECOMES 0, the value of P(A|B) becomes un-defined.



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