Set of 3 problem books covering past exams for the police officer exam. Original price: 5000 yen for all 3 books - Title: 2026 Edition Police Officer Class Ⅱ/B High School Graduate Problem Collection Past Exam Collection - Title: 2020 Edition Police Officer Absolutely Decide! Comprehensive Problem Collection for Recruitment Exams - Title: 2026 Edition High School Graduate Police Officer General Knowledge Exam Past 350 Questions The content of the 2020 edition problem book is the same as the latest 2026 edition. The 2020 edition problem book is the most difficult, so I think it's best to study well with the other two problem books before solving it. I hadn't studied in 10 years and had almost no knowledge, but I was able to pass the written exam in a month and a half by studying based on these problem books. This is a recommended set for those who are aiming to take the exam. There are no writings, but I have used them many times, so there may be some minor wear and tear. Thank you for looking.