Price reduced in October! These are three books used in the first year of Kosen (National Institute of Technology). The names have been blacked out. ⚪︎ Basic Mathematics Drill and Exercise Series There are no writings, but some pages are missing. [Series Overview] As part of the "Drill and Exercise Series," this is a textbook for a deep understanding of basic mathematics. By solving problems, you can firmly grasp the fundamentals of mathematics. [Content Features] This book is designed to cultivate basic mathematical concepts and problem-solving skills. Each chapter combines theory and practical problems, allowing learners to proceed at their own pace. [Target Readers] Ideal for students learning mathematics and those who want to review the basics. Especially recommended for exam candidates and those looking for study guides. - Title: Basic Mathematics - Series Name: Drill and Exercise Series - Publisher: Denkishoin - ISBN: 978-4-7740-1642-3 - Price: Regular price 1257 yen (including tax) - Language: Japanese ⚪︎ Kosen Mathematics 1 There are writings. Regular price 1980 yen (including tax) ⚪︎ Kosen Mathematics 1 Workbook There are writings on several pages. Regular price 935 yen (including tax) Please purchase if you don't mind the details.