Probability of Selecting a Fiction or Mystery Book

Alice has a collection of books that she is organizing. She has 4 fiction books, 3 mystery books, and 5 non-fiction books. If she randomly selects one book from her collection, what is the probability that the book she picks is either a fiction book or a mystery book?

To find the probability, first determine the total number of books and then the number of books that meet the criteria.