Art of Problem Solving 책 팝니다.
1. Prealgebra Text and Solution $30
2. Intro to Counting And Probability Text and Solution $20
3. Intro to Geometry Text and Solution $30
4. Intro to Number Theory Text and Solution $25
5. Volume 1; the Basics $25
6. Volume 2; the Basics and Beyond $25
7. Competition Math for Middle School $15