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Theory: Converting Hindu–Arabic numerals to Roman numerals

Task

What Roman number corresponds to the number 5?

 

Solution

Определение

\(\displaystyle 1\)\(\displaystyle 2\)\(\displaystyle 3\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 6\)\(\displaystyle 7\)\(\displaystyle 8\)\(\displaystyle 9\)\(\displaystyle 10\)
\(\displaystyle {\rm I}\)\(\displaystyle {\rm II}\)\(\displaystyle {\rm III}\)\(\displaystyle {\rm IV}\)\(\displaystyle {\rm V}\)\(\displaystyle {\rm VI}\)\(\displaystyle {\rm VII}\)\(\displaystyle {\rm VIII}\)\(\displaystyle {\rm IX}\)\(\displaystyle {\rm X}\)

Answer: \(\displaystyle {\rm V .}\)