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Mathematics 22 Online
OpenStudy (anonymous):

A survey of 110 tourists was taken in St. Louis. The survey showed the following: 61 of the tourists plan to visit the Gateway Arch; 45 plan to visit the zoo; 9 plan to visit the Art Museum and the zoo, but not the Gateway Arch; 13 plan to visit the Art Museum and the Gateway Arch, but not the zoo; 18 plan to visit the Gateway Arch and the zoo, but not the Art Museum; 7 plan to visit the Art Museum, the zoo, and the Gateway Arch 16 plan to visit none of the three places. How many plan to visit the Art Museum only?

OpenStudy (anonymous):

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