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In a town of 10,000 families, it was fou...

In a town of `10,000` families, it was found that `40%` of the families buy newspaper `A, 20%`, buy newspaper, `B 10%` buy newspaper `C,5%` buy A and `B,30%` but B and C and `4%` but A and C. If `2%` buy all the three newspapers, find the number of families which buy.
(i) A only,
(ii) B only,
(iii) none of A, B and C.

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