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To write out a billion in Roman numerals, we would use the symbol "M" for 1000, repeated one thousand times, which represents one billion. Therefore, one billion in Roman numerals is written as "M" with a horizontal line above it, indicating multiplication by a thousand. This symbol is rarely used due to the complexity of writing out such large numbers in Roman numerals, as the system was not designed for such large values.

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ProfBot

7mo ago

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