Răspuns:
Explicație pas cu pas:
[tex]\bf D_{12}=\{1,2,3,4,6,12\}[/tex]
[tex]\bf B=\{1,3,5,7,9,11\}[/tex]
[tex]\bf C=\{0,2,4,6,8,10\}[/tex]
a)
[tex]\bf B\cup D_{12}=\{1,3,5,7,9,11\}\cup\{1,2,3,4,6,12\}=\{1,2,3,4,5,6,7,9,11,12\}[/tex]
b)
[tex]\bf D_{12}\cap C=\{1,2,3,4,6,12\}\cap\{0,2,4,6,8,10\}=\{2,4,6\}[/tex]
c)
[tex]\bf B\cap C=\{1,3,5,7,9,11\}\cap\{0,2,4,6,8,10\}=\varnothing[/tex]
d)
[tex]\bf D_{12} \setminus B=\{1,2,3,4,6,12\} \setminus\{1,3,5,7,9,11\}=\{2,4,6,12\}[/tex]
e)
[tex]\bf D_{12} \setminus C=\{1,2,3,4,6,12\} \setminus\{0,2,4,6,8,10\} =\{1,3,12\}[/tex]
f)
[tex]\bf C\setminus D_{12}=\{0,2,4,6,8,10\}\setminus \{1,2,3,4,6,12\} =\{0,8,10\}[/tex]
