Question

Sendo A={X|X é impar menor do que 20} B={y|y é primo e monor do que 25} e c ={ Z e N|5 <19} calcule

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Answer 1

Resposta:

A={3,5,7,9,11,13,15,17,19}

B={2,3,5,7,11,13,17,19,23}

C={5,6,7,8,9,10,11,12,13,14,15,16,17,18}

a)

A∩C={5,7,9,11,13,15,17}

b)

B∩C={5,7,11,13,17}

c)

A-B={9,15}

d)

AUB={2,3,5,7,9,11,13,15,17,19,23}

AUB-C={2,3,19,23}