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Pen212
a fost răspuns

Fite multimile A={3.4.5} B={5.6.7.8} C={2,4,8} K={1,3,5,7}

a} AᑌB b} AᑌK c} BᑌC d} CᑌK e}AᑎB f} CᑎB g} BᑎK h}CᑎK

i} A\K j} C\A k} K\B l}K\A