5. At a used-book sale, 100 books are adult books and 160 are children books. 70 of the adult books are nonfiction while 60 of the children books are nonfiction. If a book is selected at random, find the probability that it is (a) not a children nonfiction book. (b) an adult book or a fiction book. (c) a children book given that the book selected is fiction book.

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