Roman numerals were actually created by the Etruscans and the city of Rome dates back to about 753 BC
They started in 19th century.
The shift was gradual, beginning in the 10th century and mostly ending in the 14th century. However we still use Roman numerals today. The biggest advances were in the field of mathematics as Roman numerals were non-positional and made mathematics difficult, if not downright impossible (for a start, fractions were limited to 1/12ths).
We started Roman Numerals in about the year of 1389 AD I think.
In Rome
rome
The Roman system of numbering came into common use in the 4th century BC. Before that, they used the Greek system of numbers.
Nomad numerals?
V
Fibonacci introduced the Arabic number system to Europe in the thirteenth century (in the 1200s AD). At first the Europeans didn't take to the system, but later found it was much easier than using Roman numerals and the abacus.
In the stone age times. Around 13,000 B.C.
IXXV is not a correctly constructed Roman Numeral. Theoretically as IX represents 9 and XV represents 15 you might suppose that 9 + 15 would mean that it represented 24 but as numerals should always start with the symbol of greatest value and IX is lower in value than 15 IXXV is obviously incorrect. The universally accepted correct method of writing 24 in Roman numerals is XXIV (or less commonly XXIIII).
Well over 2000 years. However the Roman Numerals we use today are not the Roman Numerals that the Romans used.As the Romans used them there was no ordering: IV & VI were both six, four could only be written as IIII, etc.It was monks in the middle ages that introduced modern Roman Numerals as a shorthand form.