Question

Urgent! AUB={1,2,,3,4} 2 nu aparține A ,A intersectat B ={1,3}

Answer 1

A U B={1,2,3,4}
2 nu apartine lui A
A intersectat cu B={1,3}
A={1,3,4}
B={1,2,3}

Answer 2

a U b={1,2,3,4}
2 nu e in a inseamna ca 2 apartine multimii b
a intersectat cu b ={1,3} inseamna ca 1,3 apartin multimii a si multimii b

a={1,3,4}         sau     a={1,3}
b={1,3,2}                    b={1,3,2,4}