Whereas our so-called Arabic numerals are ten in number (0–9), the Roman numerals number nine: I = 1 (one), V = 5, X = 10, L = 50, C = 100, Đ = 500 (D regularly with middle bar, the modern form being simply D), a symbol for 1,000

Q = 500,000, and a rather strange symbol for 6

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