Stabiliti valoarea de adevar:
a) [tex] D_{6} [/tex] ⊂  [tex] D_{12} [/tex]

b) [tex] M_{4} [/tex] ⊂  [tex] M_{2} [/tex]

Răspuns :

[tex]a)D_6=\{1,2,3,6\}\\ D_{12}=\{1,2,3,4,6,12\}\\ D_6\subset D_{12}(Adevarat)\\ b)M_4=\{0,4,8,12,16,...\}\\ M_{2}=\{0,2,4,6,8,10,12,..\}\\ M_4\subset M_{2}(Adevarat)[/tex]