Tuyển Tập Các Đề Thi Của Các Nước Trên Thế Giới P2

Collecting the Mathematics tests from the contests choosing the best students is not only my favorite interest but also many different people’s. This selected book is an adequate collection of the Math tests in the Mathematical Olympiads tests from 14 countries, from different regions and from the International Mathematical Olympiads tests as well