Question

if A={1,2,3} B {3,4}C{4,5,6} find A×(BUC)
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Answer 1

A={1,2,3} B {3,4}C{4,5,6}

(BUC) ={3,4,5,6}

A×(BUC) ={1,2,3}×{3,4,5,6}

A×(BUC) = {(1,3),(1,4),(1,5),(1,6),(2,3),(2,4),(2,5),(2,6),(3,3),(3,4),(3,5),(3,6)}