Respostas

A melhor resposta!
2014-03-27T01:21:18-03:00
A = {1,2,3,4,5,6,7}
B = { 3,4,5,6,7,8}
a) AПB = {3,4,5,6,7{
b) AUB = {1,2,3,4,5,6,7,8} 
3 4 3