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culbertchristi6111
12.07.2019 •
Mathematics
In a survey of 93 resorts, it was found that 30 had a spa,39 had a childrens club,11 had a spa and children club, 9 had all three features, 56 had a fitness center, 16 had a spa and a fitness center and 20 had a fitness center and childrens club. how many of the resorts surveyed had only a spa?
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Ответ:
I think it might be 30
Ответ: