It is: XLL = XC = 90
12
It is the equivalent of 9*90 = 810 which in Roman numerals are DCCCX
XVII
First, XL represents 40 since L is 50 and X is 10. A larger number following a smaller one causes you to subtract the numbers. L is another 50, so XLL is 90. XLL is not used since XC is shorter and also represents 90.
988 = CMLXXXVIII in Roman numerals
12
It is the equivalent of 9*90 = 810 which in Roman numerals are DCCCX
XVII
First, XL represents 40 since L is 50 and X is 10. A larger number following a smaller one causes you to subtract the numbers. L is another 50, so XLL is 90. XLL is not used since XC is shorter and also represents 90.
it means 1,150 in roman numerals
988 = CMLXXXVIII in Roman numerals
Not a valid sequence for Roman numerals
Those Roman Numerals mean 1991.
It does not mean anything because it is an invalid arrangement of Roman numerals
"D" in Roman Numerals equals 500.
In Roman numerals, it means N M C.
Roman numerals don't have a 0 symbol and so it is an invalid arrangement of Roman numerals