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Question
If P(A) = `1/2`, P(B) = 0, then P(A|B) is ______.
Options
0
`1/2`
Not defined
1
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Solution
If P(A) = `1/2`, P(B) = 0, then P(A|B) is not defined.
Explanation:
P(A) = `1/2` and P(B) = 0
∴ P(A ∩ B) = 0
P(A|B) = `(P(A ∩ B))/(P(B))`
= `0/0`
not defined
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