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समष्टीय समुच्चय U में 600 अवयव है। यदि A...

समष्टीय समुच्चय `U` में 600 अवयव है। यदि A और B, `U` के उपसमुच्चय हैं तथा `n(A)=300,n(B)=250` और `n(AnnB)=52` तो `n(A’nnB’)` का मान है-

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