What is Number System? A number system is a method of writing that expresses numbers using a consistent set of digits or symbols. This mathematical notation allows for the representation of numbers from a given set, providing a unique representation for each number. It also reflects the arithmetic and algebraic structure of these figures, enabling clear and accurate mathematical communication. Learn what is number system, how to classify numbers into 12 types, and how to perform operations on them. Find formulas, tricks and questions with solutions on number system. Learn what a number system is and how to use different number systems such as decimal, binary and hexadecimal. Find out the rules, charts, examples and fun facts about number systems. A number system is a mathematical way of representing a set of values using digits or symbols. Learn about the four main types of number systems (decimal, binary, octal, and hexadecimal) and how to convert them.