This is a reference book for mathematics for the Common Test. It covers the content of I+A and II+B, making it an essential book for students. This is the 4th edition, with problems tailored to the latest exam trends. In particular, the "Pick Up 128" section features a curated selection of important problems, allowing for efficient learning. The first edition was published in September 2019 by Tokyo Shoseki. The ISBN is also listed, making it easy to identify the book. - Title: Koryaku! Common Test Mathematics I+A, II+B - Edition: 4th EDITION - First Publication Date: September 1, 2019 - Publisher: Tokyo Shoseki Co., Ltd. - ISBN: 978-4-8030-1734-4 - Cover Color: Orange and White - Author: Common Test Editorial Committee It is in good condition with no writing or folds. Please understand that it has been stored at home before purchasing. Please note that it was purchased in 2022.