A={2,3,5,7}
B={0,1,2,3,4,5,6,7,8}
a) A U B={ 0,1,2,3,4,5,6,7,8}
b) A п B={2,3,5,7}
c) A-B=Mulțimea Vidă
d)B-A={0,1,4,6,8}