Mathematics, 08.09.2021 21:00 jordan5778
A survey of 65 customers was taken at a bookstore regarding the types of books purchased. The survey found that 40 customers purchased mysteries​, 32 purchased science fiction​, 22 purchased romance novels​, 17 purchased mysteries and science fiction​, 12 purchased mysteries and romance novels​, 9 purchased science fiction and romance novels​, and 4 purchased all three types of books. ​a) How many of the customers surveyed purchased only mysteries​? ​b) How many purchased mysteries and science fiction​, but not romance novels​? ​c) How many purchased mysteries or science fiction​? ​d) How many purchased mysteries or science fiction​, but not romance novels​? ​e) How many purchased exactly two types of​ books?
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A survey of 65 customers was taken at a bookstore regarding the types of books purchased. The survey...
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