By the center with the 2nd millennium BC, Babylonian arithmetic had a sophisticated foundation 60 positional numeral program. The lack of a positional worth (or zero) was indicated by a space between sexagesimal numerals. Thay đổi địa điểm (VN) chọn ngôn ngữ EN VI GIỚI THIỆU VỀ CHÚNG TÔI Tính https://angelinat357twz2.verybigblog.com/profile