What is a numeral system that was used by ancient Rome?
Q: What is a numeral system that was used by ancient Rome?
A: Roman numerals.
Q: Which letters are used in the Roman numeral system?
A: Letters from the Latin alphabet.
Q: Did Europeans still use Roman numerals after the fall of the Roman Empire?
A: Yes, they did.
Q: When did the Europeans replace Roman numerals with Arabic numerals?
A: From the 14th century.
Q: Where are Roman numerals sometimes seen nowadays?
A: On clock faces.
Q: How are the hours from 1 to 12 written on the clock of Big Ben?
A: As I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII.
Q: How are the numbers IV and IX read on the clock of Big Ben?
A: As "one less than 5" (4) and "one less than 10" (9).
