The Roman numerals "XXIX" translate to "29" in English numbers. The Roman numeral system uses letters instead of numerals to indicate numbers. The letters used in this system for numbers through 100 are I for one, V for five, X for 10, L for 50 and C for 100.
Roman numerals may be used up to three times in succession. When a letter of lesser value appears to the left of another letter, the smaller value is subtracted from the larger one. When a letter of equal or greater value appears to the right of another letter, the values are added. In the example "XXIX," XX indicates the number 20, and IX translates into nine, which is 10 minus one.