29 = XXIX
12 = XII
1991 = MCMXCI
28=xxviii 12=xii 1991=mcmxci
XII II CMXCIImproved Answer:-In today's notation of Roman numerals 1991 is MCMXCI
The date 12-12-1989 can be written as the Roman numerals XII.XII.MCMLXXXIX
In todays notation of Roman numerals: XII-XV-MCMXCI The ancient Romans probably wrote out 1991 simply as XMMI (2001-10)
12 is written as XII (10 + 1 + 1) in Roman numerals.
Arabic ' 12 Roman ; XII Look ant any classical analogue clock, you will see the '12' written in Roman numerals 'XII'.
XII-VI-MDCCCCLXXXXI
You write 19-12-1991 like: XIX-XII-MCMXCI
XII
12 in Roman numerals is XII
In Roman numerals, 12 04 2012 would be written as XII IV MMXII.
It is: 12 = XII