A problem collection for learning the basics of mathematics. It has sticky notes attached. Dates of study are written on it. Otherwise, it's in good condition^_^ - Title: Introduction to Mathematics I・A Problem Mastery - Author: Yosuke Ikeda - Publisher: Obunsha - ISBN: 978-4-01-034131-7 - Content: A problem collection for learning the basics of mathematics - Number of pages: Includes explanations in multiple colors Thank you for looking.