Stabileste valoarea de adevar a propozitiilor:
a)5 apartine {0,1,2}
b){1,7,9} inclus {0,1,6,7,8}
c)3 nu apartine {4,7,11}
d){0}= |N \ |N*
e)4 apartine {1,2,4} intersectat {5,6,2,1}
f){12,13,14} intersectat {{1,2,3,4}=O
HELP !!!!!!!!!!!!