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Mathematics, 13.07.2019 18:00 gobbler80

Eighteen students are surveyed about owning cats and/or dogs. 9 students have dogs. 6 students have cats only. 10 students have cats. how many students do not have either a cat or a dog?

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Eighteen students are surveyed about owning cats and/or dogs. 9 students have dogs. 6 students have...
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