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Mathematics, 22.01.2021 14:40 mary9664

39 people had were asked about their pets. 20 had a cat,18 had a dog and 10 had a cat but not a dog. find the values of a b c and d

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39 people had were asked about their pets. 20 had a cat,18 had a dog and 10 had a cat but not a dog....

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