A=1,2,3,4...16
B=1,2,3,4
a) A intersectat cu B=1,2,3,4
b) A reunit cu B=1,2,3,4...16
c) A minus B=5,6,7,8...16
d) B minus A= Multimea vida ( sper ca stii simbolul- un cerc taiat)
