The numerals: V, L and D are only used once in a row
The numerals: I, X, C and M are only used fourfold in a row
The symbol "D" can never be repeated in Roman numerals. According to the traditional rules of Roman numerals, "D" represents the number 500. It cannot be repeated to represent larger numbers, such as 1000 or 5000.
64 in Roman numerals is LXIV
There are some places where four is IIII rather than IV. But that's not exactly proper. You shouldn't ever run into an occasion where you need 4 or more symbols in a row without being able to use a different symbol.
There are 3 symbols that are not repeated when forming numerals. They are V, L, and D (5, 50, and 500).
Roman numerals don't have a 0 symbol and so it is an invalid arrangement of Roman numerals
The symbol "D" can never be repeated in Roman numerals. According to the traditional rules of Roman numerals, "D" represents the number 500. It cannot be repeated to represent larger numbers, such as 1000 or 5000.
64 in Roman numerals is LXIV
There are some places where four is IIII rather than IV. But that's not exactly proper. You shouldn't ever run into an occasion where you need 4 or more symbols in a row without being able to use a different symbol.
There are 3 symbols that are not repeated when forming numerals. They are V, L, and D (5, 50, and 500).
Roman numerals don't have a 0 symbol and so it is an invalid arrangement of Roman numerals
In Roman numerals, twelve is represented by the symbol "XII".
The lack of a zero symbol creates no problems with Roman numerals.
Zero cannot be represented in Roman Numerals.
The Roman numerals for 27 are XXVII. In Roman numerals, the symbol "X" represents 10, the symbol "V" represents 5, and the symbol "I" represents 1. Therefore, "XX" represents 20, "V" represents 5, and "II" represents 2, which when combined, gives us 27.
2009 in Roman numerals is MMIX.
A zero symbol.
LVI