CXLIX

CXLIX is the Roman numeral representation of the number 149. The Roman numeral system uses letters to represent numbers. C represents 100, X represents 10, and L represents 50. In Roman numerals, when a smaller numeral is placed before a larger numeral, it indicates subtraction. However, in CXLIX, the arrangement follows a different principle. The numerals are arranged from largest to smallest value to indicate addition. Therefore, CXLIX is interpreted as C + XL + IX. C is 100. XL is 40 (L minus X, 50 - 10). IX is 9 (X minus I, 10 - 1). Adding these together, 100 + 40 + 9 equals 149. This sequence demonstrates the additive principle common in Roman numeral construction, with subtractive principles applied within specific pairs like XL and IX to achieve the correct value.