Ban An phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu = 12, dong thoi chu so hang don vi = trung cong cua chu so hang tram va hang chuc. Hoi ban An tim duoc nhieu nhat may so thoa man yeu cau?

tim so co 3 chu so lon nhat co cac chu so khac nhau ma cac chu so hang don vi bang trung binh cong cua chu so hang tram va chu so hang chuc . tim so do

tim so co chu so biet trung binh cong cua 3 chu so bang 2 va chu so hang tram bang tong cac chu so hang chuc va hang don vi 

Mot bqn khi tim tat ca cac so co 6 chu so biet tong cac chu so cua no la 48 va khi viet cac chu so do theo thu tu nguoc lai thi so do khong thay doi .hoi ban ay tim duoc nhieu nhat bao nhieu so thoa man yeu cau

tim so co 3 chu so. Biet trung binh cong cua 3 chu so la 2 va chu so hang tram bang tong chu so hang chuc va hang don vi. Tim 3 chu so do ?

tim mot so biet so do nho hon 800 va chu so hang tram nho hon chu so hang chuc , chu so hang chuc nho hon chu so hang don vi va tong cac so cua chu so cua so do bang 24

tim so co ba chu so biet trung binh cong ba chu so nay bang 2 va chu so hang tram bang tong cac chu so chuc va don vi

tim so co 3 chu so biet chu so hang tram nho hon chu so hang chuc,chu so hang chuc nho hon chu so hang don vi va tong cac chu so do bang 6