isobel-walker_60bb231300d76
isobel-walker_60bb231300d76
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vamos la A={0,1,2,3,4} e B= {5,6,7,8,9,10} AUB={0,1,2,3,4,5,6,7,8,9,10} A^B= { } = vazio A-B= A = {0,1,2,3,4} B-A = B= {5 ,6, 7 , 8 , 9 10} okkkkk