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माना दो घटनायें A व B इस प्रकार हैं कि P...

माना दो घटनायें A व B इस प्रकार हैं कि P (A) = 0.3 एवं `P (A uuB) = 0.8` । यदि A व B स्वतन्त्र घटनायें हैं, तो P(B) का मान है

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