two dots in a vertical position
XXI
XXIXXI = 21
DCLXXVIIII or IXXDCC (700-21) and not DCLXXIX
It is: III-XXI-MMXI
1200
In today's terms of expressing Roman numerals: X-XXI-MCMLXXXIII
XXI is the number 21 in Roman numerals.
The date 09-21-2008 can be represented by the Roman numerals IX.XXI.MMVIII
You cannot write fractions using Roman numerals.
In today's terms it is: October-XXI-MCMLXXXI or as X-XXI-MCMLXXXI
21 in Roman numerals is XXI. 1 in Roman numerals is I. 90 in Roman numerals is XC. So, 21 1 90 would be XXI I XC in Roman numerals.
You write 1533 in roman numerals like this: MDXXXIII