39
.
10 + 10 + 10 + (10 - 1)
30 + 9
.
i before x means minus = ix = 9
i after x means plus = xi = 11
.
xxxix is correct as all letters [ivxlcdm]
xxx1x is wrong as 1 is a number not a letter
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XXX1X
No,decimal numbers and whole numbers are not counted in Roman Numerals,ROman nUmerals are meant only for natural Numbers.
Roman numerals were invented because in the roman times they did not have numbers so these were their numbers
Yes, the Etruscans invent the Roman Numbers.
In today's terms the above numerals represent 39