網頁2023年1月21日 · 1 ( previous 0, next 2 ) The cardinal number one, a single thing or unit. A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal . 15 × 134 = 2010. 0010 00112 (the number 35 in binary notation) 0x1000E001 (the number 268492801 in hexadecimal notation) ( mathematics) The identity element …
網頁1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of unit length is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest ...