Question

Sa se afle multimile D30-D18;D40ΠD60

Answer 1

D30={1,2,3,5,6,10,15,30}
D18={1,2,3,6,9,18}⇒ D30-D18={5,10,15,30} adica ce are D30 si nu se gaseste in D18

D40={1,2,4,5,8,10,20,40}
D60={1,2,3,5,6,10,15,20,30,60}⇒ D40 Π D60= {1,2,5,10,20} ce au in comun cele 2 multimi