Question

The symbols _______________ cannot be repeated while writing in roman numerals.

Answer 1

Identifying the symbol

The symbols $V,L$ and $D$ cannot be repeated while writing in roman numerals.

If we have to write $10$ in roman numerals , we write $X$ instead of writing $VV$

If we have to write $100$ in roman numerals , we write $C$ instead of writing $LL$

If we have to write $1000$ in roman numerals , we write $M$ instead of writing $DD$

Hence , this makes it clear that the symbols $V,L$ and $D$ cannot be repeated while writing in roman numerals.