X is ten so XXX IS THIRTY
It is: 205 = CCV in Roman numerals
We do use Roman numerals today. For example, Roman numerals are often found in making outlines; to label book chapters; to label the frontmatter (pages) in books.
The Roman numerals for 64 are ILXV (65-1) or LXIIII (64) and they are not LXIV. So your question is: What is the cube root of LXIIII in Arabic numerals? The answer is 4 which is IIII or IV in Roman numerals.
They are: CCCLXXI = 371
MCMLXXX is the Roman numeral for the number 1980.
In Roman numerals, 1980 is written as MCMLXXX.
MCMLXXX is the number 1980 in roman numerals. The XXX in last is to add 30 to make the last numbers 80.
MCMLXXX stands for 1980.
1980 is MCMLXXX
MCMVXXX is 1980.
XI-V-MCMLXXX
X-X-MCMLXXX
1980 = MCMLXXX 1971 = MCMLXXI
1,000 (m) + 900 (cm) + 80 (lxxx) = mcmlxxx
November= NOV. 21=xxi 1980=MCMLXXX therefore: November 21, 1980 = NOV. xxi MCMLXXX
11 20 1980 xi xx mcmlxxx