Definition
Xliii represents the number 43 in Roman numerals. Roman numerals were a common system of numerical notation used by the ancient Romans. Today, they are primarily used for stylistic purposes like clock faces, book chapters, and building cornerstones. The 'X' represents 10, 'L' represents 50, and 'I' represents 1. So, XLIII is 10 + 10 + 10 + (50-10) + 1 + 1 + 1 = 43. Think of it like a historical version of our modern numerical system.