Two
I II III etc
608
I mean M
It is: XVIII = 18
1968
roman numarals are v,i ,x,c and some other stuff with represent numbers
1=I 2=II 3=III 4=iv 5=vAnother answer:Do you mean one hundred and twenty three?If so it is: CXXIII
XII
Your answer is XXI
L
CCCLXII
XII
538