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Theory: Converting Hindu–Arabic numerals to Roman numerals

Task

What Roman number corresponds to the number 1590?

Solution

Определение

\(\displaystyle 1000\)\(\displaystyle 500\)\(\displaystyle 100\)\(\displaystyle 50\)\(\displaystyle 10\)
\(\displaystyle {\rm M}\)\(\displaystyle {\rm D}\)\(\displaystyle {\rm C}\)\(\displaystyle {\rm L}\)\(\displaystyle {\rm X}\)

 

\(\displaystyle thousands\) \(\displaystyle hundreds\) \(\displaystyle tens\) \(\displaystyle ones\)  
\(\displaystyle 1000\)\(\displaystyle +\)\(\displaystyle 500\)\(\displaystyle +\)\(\displaystyle 90\)\(\displaystyle +\)\(\displaystyle 0\)\(\displaystyle =\)\(\displaystyle 1590\)
\(\displaystyle {\rm M}\)\(\displaystyle +\)\(\displaystyle {\rm D}\)\(\displaystyle +\)\(\displaystyle {\rm XC}\)  \(\displaystyle =\)\(\displaystyle {\rm MDXC}\)

 

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