What number is represented by the Roman number \(\displaystyle {\rm IX}\)?
What number is represented by the Roman number \(\displaystyle {\rm II}\)?
What number is represented by the Roman number \(\displaystyle {\rm LX}\)?
What number is represented by the Roman number \(\displaystyle {\rm L}\)?
What number is represented by the Roman number \(\displaystyle {\rm DCLI}\)?
What number is represented by the Roman number \(\displaystyle {\rm С}\)?
What number is represented by the Roman number \(\displaystyle {\rm MDCLI}\)?
What number is represented by the Roman number \(\displaystyle {\rm MMDLX}\)?
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