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A bookshelf contains five different types of books: Fiction, Non-fiction, Mystery, Biography, and Science. The books are arranged side by side in a single row.

A reader observes the arrangement and notes the following:

  • Fiction books are to the left of the Mystery books.
  • Non-fiction books are to the left of the Biography books.
  • Science books are to the immediate right of the Mystery books but to the immediate left of the Non-fiction books.

Which two types of books are at the ends of the bookshelf?