No markings, tears or creases on any pages. Non-smoking, U.S. seller, small family business. Get ready to challenge your mind and have fun with this trio of Puzzlemania Mathmania books from Highlights. These activity books are perfect for children and young adults who love solving puzzles and playing indoor games. With a variety of puzzles and trivia, this set is sure to keep you entertained for hours. Each book is a paperback format with English language, published by Highlights in the 1990s. The author is unknown, but the puzzles and hidden pictures within the books are sure to keep you engaged. The set includes titles such as Puzzlemania Mathmania, and is part of the Puzzles, Trivia & Indoor Games, Children & Young Adults, and Puzzles and Hidden Pictures genres.