That is not a proper Roman Numeral
19
XLX is not a valid roman numeral.
It is: DCCXXX = 730
It is: XVI = 16
Nonsense. XLX would mean 50 - 10 + 10 which is 50. The correct writing would be L If you mean XIX, then it would be 19.
It is the equivalent of 313 = CCCXIII
20
1993
XLX is not a valid roman numeral.
In roman numrals it means 2011
It is: XVI = 16
It is: DCCXXX = 730
Nonsense. XLX would mean 50 - 10 + 10 which is 50. The correct writing would be L If you mean XIX, then it would be 19.
li or LI = 51
It is the equivalent of 313 = CCCXIII
The Roman numerals XLX (-X+L+X = L) would amount to 50.
In today's notation they represent 390
D