In everyday life, we use numbers all the time, whether for counting, telling time, or handling money. The number system we’re most familiar with is the decimal system , but computers use other systems, such as binary and hexadecimal . Let’s break down these number systems to understand how they work. What is a Number System? A number system is a way of representing numbers using a set of symbols and rules. The most common number systems are: Decimal (Base 10) Binary (Base 2) Hexadecimal (Base 16) Each system has a different “base” that tells us how many unique digits (symbols) are used to represent numbers. Decimal Number System (Base 10) This is the system we use daily. It has 10 digits , ranging from 0 to 9 . Example: The number 529 in decimal means: 5 × 1⁰² + 2 × 1⁰¹ + 9 × 1⁰⁰ = 500 + 20 + 9 = 529 Each position represents a power of 10, starting from the rightmost digit. Why Base 10? Decimal is base 10 because it has 10 digits...