Number systems quantify the world around us, from counting objects to complex mathematical calculations. They range from natural numbers (1, 2, 3, …) to rational numbers (fractions and decimals) and irrational numbers (like pi), each with its unique properties and applications. Modern computing relies on binary, decimal, and hexadecimal systems, demonstrating the versatility of number systems in various fields. Understanding these systems is crucial for everyday tasks and advanced STEM disciplines, empowering us to navigate numerical concepts with precision.