Which numbering system consists of digits 0-9?

The decimal numbering system uses digits ranging from 0 to 9, making it the most common system for everyday counting and calculations. This is the standard system in which most people learn to count and perform arithmetic operations. It has a base of 10, meaning that it is built upon ten different symbols (the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) and powers of ten are used to represent larger values.

In contrast, the binary numbering system consists only of two digits: 0 and 1, which is primarily used in computing and digital electronics. The hexadecimal system extends beyond just digits 0-9 to include letters A to F, representing values from 10 to 15, providing a base of 16. Base64 is a method for encoding binary data into ASCII text, which utilizes an extended set of 64 characters, including both letters and symbols, making it not a simple digit-based system.

Thus, the option referring to the decimal numbering system is correct because it involves the full range of digits from 0 to 9.