In a town of 10,000 families it was found that 40% families buy newspaper A, 20% families buy newspaper B and 10% buy C. 5% buy AB, 3% buy BC and 4% buy AC. If 2% families buy all the three, find the number of families which buy exactly one of A,B,C?
A)4800
B)5200
C)5400
D)6400
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the correct answer is 5200. it is option B
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