Răspuns:
9=IX. 11=XI
24=XXIV. 49= XLIX
19=XIX. 1500=MDM
23=XXIII. 1457=MCDLVII
74=LXXIV 1918=MCMXVIII
122=CXXII
1900=MCM
2015=MXV
IX=9. MDLXII=543
XXXII=32. MMDXXII=1522
LXXI=71. MCMLXXXIX=1939
DCCC=800. CD=400
XXXVI=34
CCLXIII=153
MM=2000
DC=700
MML=1050