Yes the Romans had a symbol for zero which was N but there was no need to use it because the positional place value of Roman numerals are self explanatory.
For example to write out 501 we need to include a zero to represent its real value but the equivalent of 501 in Roman numerals is DI which does not require a zero symbol.
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there is no roman numeral for itAnother answer: The Romans had no numeral to represent zero because there was no need for a zero in their system. We have 9 numbers plus the zero symbol. We add a zero on to the end of a number to convert it to tens and two zeros to convert it to hundreds and so on. The Romans simply had different symbols for tens and hundreds. For example we would write 1, 10, 20, 40, 50, 100 and 200 but the same numbers as Roman numerals would be I, X, XX, XL, L, C and CC, done quite simply with no need for a zero. In the middle ages monks, who still used Roman numerals and wrote in Latin, began to used the symbol N to represent zero (from the Latin Nullae meaning nothing).
The number zero is needed in the Hindu-Arabic numeral system because as for example it tells us that there is a difference between 207 and 27 but in the Roman numeral system a zero number is not needed because we automatically know that there is a difference between CCVII and XXVII. In fact the Romans had a symbol for zero which was N and its Latin word is 'nihil'
No, the Romans had no concept for zero. This is an Arabic notion.
The Egyptians wrote numbers using the Arabic numeral system (our system) and the Romans used the Roman numeral system. (IVXLCDM)
the roman numeral system