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Mathematics 12 Online
OpenStudy (anonymous):

11 In a town of 10,000 families it was found that 40% families buy newspaper A,20% buy newspaper B,and 10% families buy newspaper C.5%families buy A and B̊ 3% B and C 4% buy A and C .If 2% buy all the newspapers, find the no. of families which buy (i) A only (ii) B only (iii) none of A,B and C

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