Instant purchase accepted ⭕️ Price reduction not available ❌ A reference book carefully selected for mathematics problems at the level of the University of Tokyo, Kyoto University, Hitotsubashi University, and Tokyo Institute of Technology. - Title: Advanced Problem Solving in Mathematics I + A + II + B - Author: Koichi Nagasaki - Publisher: Obunsha - Price: 1,300 yen - Content: Carefully selected problems at the level of the University of Tokyo, Kyoto University, Hitotsubashi University, and Tokyo Institute of Technology. Thank you for viewing. There are some markings with a highlighter and pencil on some pages, but it is relatively clean and usable.