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What is the Roman numeral for 60?
A. LX
B. XL
C. LXX
D. XC
Correct Answer Is Option = LX
Notes / Explanation
The Roman numeral for the number sixty is written as LX, and this provides a good example of the addition rule used in the ancient Roman system of writing numbers. In the Roman system, certain letters stand for particular values, with a letter for fifty 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 sixty is written using the addition rule, by placing the letter for ten after the letter for fifty, so that the ten is added to the fifty, giving fifty plus ten, which is sixty, and this is written as LX. This is different from the number forty, which is written by placing the letter for ten before the letter for fifty, so that the ten is subtracted from the fifty to give forty; for sixty, the letter for ten comes after the letter for fifty, so that it is added. Similarly, the number seventy is written by placing the letter for ten after the letter for fifty twice, giving fifty plus twenty, which is seventy, and the number eighty by placing the letter for ten after the letter for fifty three times, giving fifty plus thirty, which is eighty. In this way the numbers sixty, seventy and eighty are formed by adding ten, twenty or thirty to the fifty. Understanding when letters are added and when they are subtracted is important for reading and writing Roman numerals correctly. 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 sixty is LX, that this uses the addition rule by placing the letter for ten after the letter for fifty so that ten is added to fifty, that this is different from forty, which places the letter for ten before the letter for fifty so that it is subtracted, and that the numbers seventy and eighty are similarly formed by adding ten, twenty or thirty to the fifty.
