a)D2={1,2}->M5={0,5,10,15,20,25,30,35...}=>multimea vidă.
b)D12={1,2,3,4,6,12}->M6={0,6,12,18,24...}=>{6,12}.
c)D20={1,2,4,5,10,20}->D15={1,3,5,15}=>{1,2,3,4,5,10,15,20}.
d)D40={1,2,4,5,8,10,20,40}->M5={0,5,10,15,20,25,30,35,40,45,50...}=>{5,10,20,40}
d)