CO BAO NHIEU SO TRON TRAM LON HON TRON TRAM LON HON 500 ,A,2 SO .B,5 SO  .C .3,SO  D,4 SO

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 bang 12 dong thoi chu so hang don vi bang trung binh cong cua chu so hang tram va hyang chuc hoi ban an tim duoc nhieu nhat bao nhieu so thoa man yeu cau

A  hai so do co cung so tram va so chuc nhung cac so don vi hon kem nhau 5 don vi . Hoi hai so do hon kem nhau bao nhieu don vi         B hai so do co cung so chuc va so don vi nhung hai so tram hon kem nhau 3 don vi .Hoi hai so  do hon kem nhau bao nhieu don vi

Tong cua mot so tron tram lon nhat co bon chu so va so be nhat co bon chu so giong nhau la bao nhieu ? 

Viet so co 3 chu so ,biet so don vi lon hon so chuc la 4 ,so chuc lon hon so tram la 4

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?

co bao nhieu so co 3 c/s ma chu so cua cac so do lon hon 4

Trung binh cong cua hai so la so tron tram lon nhat co 4 chu so,so lonla so lon nhat co 4 chu so.Tim so be

co tat ca bao nhieu so tron chuc lon hon 2017 nhung be hon 2191 ?