A set of reference books for solid math fundamentals. - Title: Gokaku suru Keisan Mathematics I・A, Ⅱ・B - Title: Gokaku suru Keisan Mathematics III - Title: Gokaku suru Kakuritsu + Baai no Suu (Probability + Combinations) Thank you for viewing. This is a set sale. All included cards and answer sheets are included. Mathematics I・A, Ⅱ・B, and Mathematics III have been used and have notes, etc. + Baai no Suu (Combinations) has no notes and no noticeable damage. Please refrain from purchasing if you are sensitive to used items.