This is a math exercise book for university entrance exams. All problems are from past university entrance exams. Each chapter has examples, practice problems, and exercises, allowing you to work through them by difficulty, making it an easy-to-use exercise book. As you can see in the photos, the lower left corner of the IA IIB book has a dent and some scratches. The contents are clean with no stains or writing. - Title: Clear Math Exercises ⅠA ⅡB Exam Edition - Title: Clear Math Exercises IA ⅡB Answer Edition - Title: Clear Math Exercises III Exam Edition - Title: Clear Math Exercises III Answer Edition - Publisher: Kenkyusha Publishing The original retail price for all four books was 1650 yen + tax. Thank you for looking.