What is number system define its different types?

A number system is a way of expressing numbers using a consistent set of symbols and rules. The main types of number systems include:

1. Decimal (Base 10): The most commonly used system, utilizing digits 0-9.
2. Binary (Base 2): Used in computing, consisting of only two digits, 0 and 1.
3. Octal (Base 8): Uses digits 0-7 and is sometimes used in computing and digital systems.
4. Hexadecimal (Base 16): Combines digits 0-9 and letters A-F, often used in programming and digital electronics.