"Most Important Math Problems for High School Entrance Exams" Gakken Educational Publishing Price: ¥1200 #GakkenEducationalPublishing #Books #Nature/Mathematics 5-subject set Thank you for viewing. This is a used item stored at home, but it appears to be in good condition. There is some creasing on the cover and obi. Please note that there may be oversights due to my amateur inspection. If you understand, please consider purchasing. We offer a discount for multiple purchases.