Problem sets analyzing exam trends from 2008 to 2022. - Title: Tohoku University Science Mathematics 15 Years, 8th Edition - Title: Tohoku University English 15 Years, 8th Edition - Publisher: Keihanshin Shoin - Content: Problem sets analyzing exam trends from 2008 to 2022 - Level: B Thank you for viewing. Both books have some eraser marks. Regarding Science Mathematics: As shown in the photos, almost all of the table of contents has diagonal lines drawn on it. Also, around 80% of the problem numbers have ○☓▲ marks next to them. Other than that, there are no particular writings. Regarding English: As shown in the photos, some of the table of contents has diagonal lines, and in addition, some words in the text from 2015-2018 have been highlighted with a highlighter. Other than that, there are no particular writings.