Radix

The radix (also known as the base of numbers) is a mathematical concept which quantifies the number of numeric or symbolic characters used to compose the base of a number system. The commonly used base 10 number system is so named because it uses ten numerals to signify the values ranging from "zero" to "nine" (Example: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9). The hexadecimal number system has a radix (or base) of sixteen, and uses the numerals 0 to 9 in addition to A, B, C, D, F to represent ten to fifteen. The binary number system has a radix of two, and uses the numerals 0 and 1.