1 “... for advanced problem- solving courses, for self-study, or as a resource for teachers and students training...”

2

3 “... of mathematics to all students, teachers, and all math lovers."  —MAA Online (Review of the First Edition...”

4

5 “... in training teachers and students engaged in mathematical competitions, it is a source of enrichment...”

6 “... for advanced high school students, undergraduates, and mathematics teachers engaged in competition training...”

7 “... culture. The target audience includes undergraduates, high school students and their teachers...”

8 “... and teachers, mathematical contest participants — including Olympiad and Putnam competitors — as well...”

9 “... undergraduates, high school students and their teachers, mathematical contestants (such as those training...”

10 “...This challenging problem book by renowned US Olympiad coaches, mathematics teachers...”

11 “... for self-study by undergraduate and graduate students, as well as teachers and researchers in the physical...”

12 “..., this book’s breadth and depth will appeal to a wide audience, from secondary school teachers and pupils...”

13 “... research mathematicians and renowned teachers, this text is a clear, accessible introduction to the subject...”