Răspuns:
IV -4
IX-9
VI-6
XI-11
CD-400
CM-900
XLIX-49
XCIV-94
LX-60
CX-110
CXC-190
MCM-1900
1900 ,900, 400, 190, 110 ,94, 60, 49, 11,9 ,6,4
sau
MCM, CM ,CD, CXC, CX, XCIV, LX, XLIX, XI ,IX ,VI ,IV