This is an efficient problem collection that includes only the high-accuracy questions from high school entrance exam math. There are 5 pages with check marks indicating the problems I got wrong. The other pages were used by copying, so they are in relatively clean condition. Please understand that this is a personal inspection before purchasing. ~Pre-Exam Student Support Campaign~ If you comment "I'm a student" on the transaction screen after purchase, I will include a small bonus to help with your studies. I also sell other reference books for high school entrance exams. <Bundle Discount> For purchases of up to 3 books, we will offer a discount of 100 yen per book. - Title: Unlosable Entrance Exam Problems Math 3rd Edition - Publisher: Obunsha - Price: 990 yen - ISBN: 978-4-01-021954-6 - Contents: Math entrance exam problem collection, can study efficiently with a 79% accuracy rate for each problem Thank you for viewing.