A and B are two events such that P (A) 0. Find P(B|A), if A B= . - Vidyadip

Question

A and B are two events such that P (A) $\ne$ 0. Find P(B|A), if $A \cap B=\phi$.

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Answer

Given that $A \cap B = \phi \Rightarrow P(A \cap B)=0$
$\therefore P(B | A)=\frac{P(A \cap B)}{P(A)} = 0$

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