Question

Stabiliti valoarea de adevar:
a) $D_{6}$ ⊂  $D_{12}$

b) $M_{4}$ ⊂  $M_{2}$

Answer 1

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