CMXXIX

CMXXIX is the Roman numeral representation of the number 1929. In Roman numeral notation, C represents 100, M represents 1000, X represents 10, and I represents 1. The numeral is constructed by combining these symbols according to specific rules. The placement of a symbol of lesser value before a symbol of greater value indicates subtraction, while the placement of a symbol of lesser or equal value after a symbol of greater value indicates addition.

In CMXXIX, the C before M (CM) signifies 1000 - 100 = 900. The two X's after the M (XX) indicate 10 + 10 = 20. Finally, the I before X (IX) represents 10 - 1 = 9. Therefore, when these components are added together, CMXXIX equals 900 + 20 + 9, which equals 1929. This specific Roman numeral would be used in historical contexts or for stylistic purposes where Roman numerals are employed. It is a standard representation for the year or a quantity.