Question

Va rog frumos ajutatima!

Answer 1

D10∩M5={5,10}   D10={1,2,5,10}    M5={0,5,10,15....}
D12∩D6={6,12}    D12={1,2,3,4,6,12}     M6={0,6,12,18.....}
D20∪D5={1,2,4,5,10,20}    D20={1,2,4,5,10,20}   D5={1,5}
D40∩M5={5,10,20,40}       D40={1,2,4,5,8,10,20,40}      M5={0,5,10,15...}

Answer 2

a)D10-{1,2,5,10}
M5-{0,5,10,15,20.....}
D10/M5-{5,10}
b)D12-{1,2,3,4,6,12}
M6-{0,6,12,18,24....}
D12/M6-{6,12}
c)D20-{1,2,4,5,10,20}
D15-{1,3,5,15}
D20\D15-{2,4,10,20}
d)D40-{1,2,4,5,9,10,20,40}
M5-{0,5,10,15,20,25,30,35,40....}
D40/M5-{5,10,20,40}