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During the process of collecting the data of reading fortnightly magazines A, B and C, a survey company surveyed 20,000 families. The company found that
During the process of collecting the data of reading fortnightly magazines
A, B and C, a survey company surveyed 20,000 families. The company
found that 20% families read magazine A, 40% families read magazine B,
and 10% families read magazine C, 5% families read A and B, 3% read B
and C and 4% read A and C. If 2% families read all the three magazines,
then the percentage of the families who read magazine B only
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