Răspuns :
500, 250, 2643, 90, 2222, 999, 33, 407, scrise cu cifre arabe
Crescator: XXXIII, XC, CCL, CDVII, D, CMXCIX, MMCCXXII, MMDCXLIII
Crescator: XXXIII, XC, CCL, CDVII, D, CMXCIX, MMCCXXII, MMDCXLIII