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दो घटनाएँ A तथा B परस्पर स्वतंत्र कहला...

दो घटनाएँ A तथा B परस्पर स्वतंत्र कहलाती है यदि
(a) ` P(P(A))= P(B)` (b ) ` P(A) + P(B) = 1`
(c ) `P(bar(A)bar(B)) = [ 1 - P (A)] [ 1 - P(B)]`
(d ) A और B परस्पर अपवर्जी है

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