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elimina din fiecare sir numarul care nu corespunde:a.265,270,275,255,280,285,b.999,899,799,669,699,599,c.450,500,550,600,620,650;d.106,206,306,416,406,506;

Răspuns :

a ) 280 si 270
b) 669
c) 620
d) 416