Deci....
Am 5 ex.la mate ;v;
Pls ajutatima

Răspuns:
A = { 1,2,3,4,5,6,7 }
B = {3,4,5,6,7,8}
C = { 5,6,7,8,9,10,11,12}
M = { 1,2,3,4,5,6,7,8,9,10,11,12 }
Explicație pas cu pas:
Răspuns:
a)
A={0,1,2,3,4,5,6,7}
B={3,4,5,6,7,8}
C={5,6,7,8,9,10,11,12}
c)
M={0,1,2,3,4,5,6,7,8,9,10,11,12}