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MCQ
यदि A और B ऐसी दो घटनाएँ हैं कि P(A) + P(B) – P(A और B) = P(A), तब
Options
P(B|A) = 1
P(A|B) = 1
P(B|A) = 0
P(A|B) = 0
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Solution
P(A|B) = 1
स्पष्टीकरण:
P(A) + P(B) – P(A ∩ B) = P(A)
⇒ P(B) − P(A ∩ B) = 0
या P(A ∩ B) = P(B)
या `("P"("A" ∩ "B"))/("P"("B"))` = 1
P(A|B) = 1
Concept: सप्रतिबंध प्रायिकता
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