USA Math Kangaroo Grade 7-8 in 2008
USA Math Kangaroo Grade 7-8 in 2008
1. The French writer of a successful book on entertaining mathematics, Jacques Ozanam, was born after 1600 and before 1700. On year x2 he was x years old. When was he born?
Để tiếp tục học, xin mời đăng nhập hoặc đăng ký tài khoản.