XCVIII is the Roman numeral representation for the number 98. In the Roman numeral system, letters are used to signify values, where "X" stands for 10, "C" for 100, and "V" for 5. The numeral is formed by combining these letters, with "X" (10) and "C" (100) indicating that 98 is derived from 100 minus 2, plus 5. In various contexts, such as mathematics and history, the number 98 can represent different things. For example, it is often used in numbering chapters or sections in books, and it can also refer to the year 1998, which was significant for events like the World Cup and the introduction of the iMac.