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What is the Roman numeral for 19?
A. XXI
B. XIX
C. IXX
D. XVIV
Correct Answer Is Option = XIX
Notes / Explanation
The Roman numeral for the number nineteen is written as XIX, and this provides a good example of how the Roman system combines the rules of addition and subtraction to write numbers. In the Roman system, certain letters stand for particular values, with a letter for one and a letter for ten among the basic letters, and numbers are written by combining these letters according to fixed rules of addition and subtraction. Generally, when a letter of smaller value is placed after a letter of larger or equal value, the values are added together, but when a letter of smaller value is placed before a letter of larger value, the smaller value is subtracted from the larger. The number nineteen is written by combining these rules. It is made up of the letter for ten, followed by the representation of nine, which is itself written using the subtraction rule as the letter for one placed before the letter for ten, so that nineteen is written as the letter for ten followed by the letters for nine, giving ten plus nine, which is nineteen, written as XIX. In this way, the ten is written first, and then the nine is added after it, the nine itself being formed by the subtraction of one from ten. This is a good example of how larger numbers are built up by combining the letters and the rules. It is important to write the number correctly according to the rules, so that nineteen is written as the ten followed by the nine, rather than in some other way. Understanding how the rules of addition and subtraction are combined is important for reading and writing Roman numerals correctly, particularly for numbers that combine both. The Roman numerals survive in many uses today, such as on clocks, in the names of rulers and popes, in the numbering of chapters and events, and in dates on buildings. For PPSC and other competitive examinations, the key points to remember are that the Roman numeral for nineteen is XIX, that it is made up of the letter for ten followed by the representation of nine, that the nine is itself written using the subtraction rule, as the letter for one placed before the letter for ten, and that this is a good example of how larger numbers are built up by combining the letters and the rules of addition and subtraction.
