A={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}
B={2,3,4}
A intersecție B ={2,3,4}
A reuniune B = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}
A\B={1,5,6,7,8,9,10,11,12,13,14,15,16}
B\A= multimea vida
❤