What is the concept number system?

A number system is a method of expressing numbers in a consistent and organized manner, typically using a set of symbols or digits. The most common number system is the decimal system, which is base 10 and uses digits from 0 to 9. Other examples include binary (base 2), which uses only 0 and 1, and hexadecimal (base 16), which includes digits 0-9 and letters A-F. Each number system has its own rules for representing values and performing arithmetic operations.