The Roman numerals III stands for 3.
II is the Roman numeral for the number 2.
MDCCXCIII (M=1000, DCC=700, XC=90, III=3)
roman numarals are v,i ,x,c and some other stuff with represent numbers
Your answer is XXI
XII
L
CCCLXII
DCC
1 = I
XXXIX
CXXVI
XII