Răspuns:
D12={1,2,3,4,6,12}
D16={1,2,4,8,16}
D12intersectatD16={1,2,4}
D8={1,2,4,8}
D15={1,3,5,15}
D8 reunit D15={1}
M2={0,2,4,6,8,10,12,14,16,18,20.....}
M3={0,3,6,9,12,15,18,21,24....}
M2 inters M3={0,6,12,18,24,30....}
