Răspuns :
lX, X, Xl , lXX, XX, XXl, lXXX, XXX. = 15 CIFRE
9, 10, 11, 19, 20, 21, 29, 30.
9, 10, 11, 19, 20, 21, 29, 30.
IX,X,XI,XII,XIII,XIV,XV,XVI,XVII,XVIII,XIX,XX,XXI,XXII,XXIII,XXIV,XXV,XXVI, XXVII,XXVIII,XXIX,XXX=36 de X;29 deI;10 de V.