Răspuns:
Explicație pas cu pas:
[tex]\bold{D_{15}=\{1,3,5,15\}}\\\bold{D_{24}=\{1,2,3,4,6,8,12,24\}}\\\bold{D_{45}=\{1,3,5,9,15,45\}}\\A=\{x\in\mathbb{N}\:|\:x\in{M_{3},\:x < 21\}\Rightarrow \bold{A=\{0,3,6,9,12,15,18\}}[/tex]
[tex]B=\{x\in\mathbb{N}^{*}\:|\:x\in M_{6},\:x < 43\}\Rightarrow \bold{B=\{6,12,18,24,30,36,42\}}\\C=\{x\in\mathbb{N}\:|\:x\in M_{11},\:14 < x < 63\}\Rightarrow \bold{C=\{22,33,44,55\}}[/tex]
