By the center from the 2nd millennium BC, Babylonian arithmetic experienced a complicated foundation sixty positional numeral system. The lack of the positional price (or zero) was indicated by an area involving sexagesimal numerals.?? ki?m tra tr?ng thái chuy?n hàng c?a b?n. Thông tin chi ti?t theo th?i gian th?c t? ti?n ?? chuy?n hàng. H? TR?… Read More