Mathematics, 30.08.2019 14:30 mirianplacencia27

In a survey it was found that 21 persons it was found that 21 persons liked product a, 26 liked product b, and 29 liked product c. if 14 people liked product a and b, 12 people liked products c and a, 14 people liked products b and c and 8 liked all the three products. find,
i) the number of people who liked at least one product.
ii) the number of people who like product c only.

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In a survey it was found that 21 persons it was found that 21 persons liked product a, 26 liked prod...