Determinati multimile: a) A={x|x€N si x€D12}; b) B={x|x€N* si (x+1)€D15. Va rog urgent! Coroana!!

Răspuns :

a) x€{1,2,3,4,6,12}
b)x+1€{1,3,5,15}
x€{2,4,14}