V is 5. I is 1. VI is 6.
On converting between Arabic and Roman Numbers: DCCVI IN ROMAN NUMERALS is 706. DCC=700 and VI=6.
roman numarals are v,i ,x,c and some other stuff with represent numbers
XII
Your answer is XXI
L
CCCLXII
XII
538
1 = I
DCC
XXXIX
in roman X