A folded quiz book is a book that contains a series of quizzes, typically on different topics, with the answers for each quiz at the end. The quizzes are usually short, with multiple choice or fill-in-the-blank questions. The book is folded in such a way that the reader can easily see the questions on one page and the answers on the facing page. Folded quiz books are often used for self-study, as a fun way to test one's knowledge on a variety of topics, or as a way to entertain children and adults.