Răspuns:
6.
{0,1,2,3} {0,1,2,3,4} {0,1,2,3,5} {1,2,3,4} {1,2,3,5} {1,2,3,4,5} {0,1,2,3,4,5}
9.a)A
b)F
c)A
d)A
e)A
f)A