Question

Fie A={-2; 1; 12; 0; -4; 5; 4/3}. Determinati multimile: B={xeA/xeN}, C={xeA/xeZ}, D={xeA/xeZ-}, E={xeA/xeQ+}.

Answer 1

B= {-2;0;-4;4/3}
c={4/3}
D={1,12,5,4/3}
E={-2;0;-4;4/3}