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Because the Latin word for the Roman numerals XVIIII is novemdecim which literally means nineteen (19) and the Latin word for the numerals IXX is undeviginti which literally means one from twenty (20-1). Check it out in a Latin dictionary. The numerals XIX (there's no Latin word for this arrangement of numerals) are supposed to emulate the Hindu Arabic numerals 19 in subtractive notation. But the Roman numerals representing 19 in subtractive notation are IXX (20-1).

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That being said, the currently accepted representation of 19 is indeed XIX (10 + 9), not IXX, as it is for 29 (XXIX), 39 (XXXIX), 49 (XLIX), 59 (LIX), 69 (LXIX), 79 (LXXIX), 89 (LXXXIX) and 99 (usually XCIX).

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Wiki User

7y ago
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Anonymous

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3y ago
Letters and numbers transformations..IN TIME..
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James Ivory, III

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2y ago
Generally, I have in the past (for no particular reason) proficient in the Roman numerical system. Deciding, as I was informally corresponding on Twitter, that substitution of the Hindu Arabic (19)... associated with COVID-19... lent
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James Ivory, III

Lvl 1
2y ago
... some variety, if not a change of pace. Not using the letter based Roman numerals for a long time, I started with XVIIII. I immediately knew that it was in error, opting instead for, IXX.
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James Ivory, III

Lvl 1
2y ago
... as it turns out, both are essentially correct as the Latin and Roman representation for (19) is, as a function of mathematical operations in subtraction. Butthat XIX became the universally excepted representation for The Hindu Arabic value for 19. 🏛

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Q: Why is 19 in roman numerals xviiii or ixx and not the usual xix?
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What is 19 writing in Roman Numerals Roman Numerals 19?

Today the equivalent of 19 in Roman numerals are XIX But in ancient Rome they once were XVIIII or IXX In fact the Latin word for XVIIII is 'novemdecim' and the Latin word for IXX is 'undeviginti There is no equivalent Latin word for XIX


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The number 019 or 19 when converted into Roman numerals is officially today considered as being XIX But the ancient Romans probably worked out the equivalent of 19 as XVIIII and simply wrote it out as IXX In fact the Latin language has words to describe XVIIII and IXX but there is no Latin word for XIX


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How would you actually add together in two different ways 19 plus 62 plus 19 entirely in Roman numerals with explanations?

Nowadays we would express 19 in Roman numerals as XIX but in ancient Rome the equivalent of 19 was XVIIII or IXX thus facilitating the speed and ease of addition in either of the following formats:-IXX+LXII = LXXXI => (20-1)+62 = 81LXXXI+IXX = C => 81+(20-1) = 100Alternatively:-XVIIII+LXII = LXXXI => 19+62 = 81LXXXI+XVIIII = C => 81+19 = 100Note that the Latin word for XVIIII is novemdecim and and for IXX it is undeviginti but there is no Latin word for todays notation of 19 as XIX


If 19 in roman numerals is ixx or xviiii then what is half of 19 in roman numerals?

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