Question

1° Dados os conjuntos, A = {1, 2, 3} e B = {2, 5}, determine:
a) A XB
b) BXA​

Answer 1

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$\tt{a)}~\sf{A\times B=(\{1,2\},\{1,5\},\{2,2\},\{2,5\},\{3,2\},\{3,5\})}\\\tt{b)}~\sf{B\times A=({\{2,1\},\{2,2\},\{2,3\},\{5,1\},\{5,2\},\{5,3\})}$