Logical Questions: Logical Puzzle

In a day at the library, 64 people borrowed books. Twice as many people borrowed a thriller only as borrowed a science fiction novel only. Three people borrowed a biography only and 11 people borrowed both science fiction and a thriller but not a biography. The same number borrowed a biography and a thriller but not a science fiction as borrowed one of each of the three types. Twenty-one people did not borrow a thriller. One more person borrowed a science fiction book and a biography book than borrowed a biography only.

  1. How many biographies were borrowed in total?
  2. How many people borrowed only two of three types?
  3. How many people borrowed a thriller, a biography and a science fiction?
  4. How many people borrowed a thriller only?
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