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प्रश्न
If A and B are events such that P (A|B) = P(B|A), then ______.
पर्याय
A ⊂ B but A ≠ B
A = B
A ∩ B = Φ
P(A) = P(B)
उत्तर
If A and B are events such that P (A|B) = P(B|A), then P(A) = P(B).
Explanation:
P(A|B) = P(B|A)
`(P(A ∩ B))/(P(B)) = (P(B ∩ A))/(P(A))`
⇒ P(A) = P(B)
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