Răspuns:
Explicație pas cu pas:
a) MMCX ( 2110); MCDII (1402); MCLV (1 155); MCXLII (1142); MMMXX(3020)
MCXLII < MCLV < MCDII < MMCX < MMMXX => crescator
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b) MMXV ( 2015); MCXLII (1142); MMMXX ( 3020); MCDXVII (1417)
MCXLII < MCDXVII < MMXV < MMMXX => crescator