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Aflati CMMDC si CMMMC al numerelor 12,14,21,36,42,56,72,120

Răspuns :

Descompunem fiecare numar in parte:
12=2² * 3
14=2 * 7
21=3 * 7
36=3² * 2²
42=7 * 3 * 2
56=2³ * 7
72=3² * 2³
120=2³ * 3 * 5
( cmmmdc) =1
[cmmmc]= 2³ * 5 * 7 * 3²=2520