Express the following into Hindu-Arabic system:
CLXXXVII
Here, C=100,LXXX=80andVII=7
So, CLXXXVII=100+80+7
∴CLXXXVII=187
Express the following as a Hindu-Arabic numeral:
XCV
CCXX
CCCLXXXIII
MMMDXXI
Translate the following Roman numerals into Hindu-Arabic numerals.
XV