In a survey of 60 people it was found that 21 liked product A .26 liked product B and 29 liked product C .if 14 people liked product A and B .12 people like product
how many people liked at least one of the three products
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If 14 people liked products A and B, 12 people liked products C and A, 14 people liked products B and C and 8 liked all the three products.
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Let A , B , and C be the set of people who like product A , product B, and product C respectively.Accordingly, n(A) = 21, n(B) = 26, n(C) = 29, n(A ∩ ..
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