(chatquestion)...ones. UNION OF SETS Let A and B be two sets. The union of A and B is the s belong either to A or to B or to hoth A and B. We shall use the notation AOB (read as "A union B") to denote th Thus, learly, x e AUB xE A or x e B. nd, AUB= {x :x € A or x e B}. x ¤ A U B = x ¢ A and x ¢ B. LR It is evident from t...(While A ⋃ B in set builder form why we don't mention x belongs to both A and B i. e, { x: ∈A Or x∈B or x∈A, B})

Question