C d m
The greatest value two digit number in Roman numerals would be [MM] with a horizontal bar placed above it, which would represent the number 2 Billion. In generally used Roman numerals MM represents 2000.
The Roman numeral for 10 is X
999 is IM Roman numerals = 1000-1
ICIX is not used; if it were that is 99 (IC) +9 (IX) = 108 which is not a 2 digit number 99 is the maximum two digit number; in Roman Numerals, that is XCIX
C d m
The greatest value two digit number in Roman numerals would be [MM] with a horizontal bar placed above it, which would represent the number 2 Billion. In generally used Roman numerals MM represents 2000.
The Roman numeral for 10 is X
999 is IM Roman numerals = 1000-1
IV = ivy(4 in roman numerals).
The number 0 it was 'invented' centuries later.
987
ICIX is not used; if it were that is 99 (IC) +9 (IX) = 108 which is not a 2 digit number 99 is the maximum two digit number; in Roman Numerals, that is XCIX
772
888 when writing with roman numerals it is 12 characters long DCCCLXXXVIIIAnother answer:999 in Roman numerals in additional notation is DCCCCLXXXXVIIII which has 15 numerals.
88, rather nicely uses 8 characters in Roman numerals: LXXXVIII.
The Romans had no symbol for the currently used number zero. During the middle ages monks, who still wrote in Latin and still used Roman numerals, introduced the symbol 'N' (abbrieviated from the Latin word Nullae) to represent zero.