Number - Base (or Radix)

About

The radix or base ¹⁾ is the number of unique digits, including zero, used to represent numbers in a positional numeral system.

Example

Decimal

For the decimal system the radix is ten, because it uses ten digits:

• 0
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9

Binary

For the binary system the radix is 2, because it uses only two digits:

• 0
• 1