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Sa se afle multimile:a)D30-D18;b)D40∩D60 O rezolvare pentru amandoua!Va rog!

Răspuns :

a)D30={1,2,3,5,6,10,15,30} D18={1,2,3,6,9,18} D30-D18={1,2,3,5,6,10,15,30} - {1,2,3,6,9,18}={5,10,15,30< b)D40 n D60 D40={1,2,4,5,8,10,15,20,40} D60={1,2,3,4,5,6,10,15,20,30,60} D40 n D60={1,2,4,5,8,10,15,20,40} n {1,2,3,4,5,6,10,15,20,30,60}={1,2,4,5,10,15,20} Nota: n=reunit Sper ca ti.am fost de ajutor !