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?

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

Tim 3 so tu nhien lien nhau hon kem nhau 4 don vi;trung binh cong cua 3 so do la 13.Xin cac ban giup cho minh vs.

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

bet so A be hon trung bnh cong cua so A va cac so 1991, 2014, 2032, la 7 don vi tim so A

tim mot phan so biet neu them 28 don vi vao tu so ta duoc phan so moi co gia tri bang 1 va biet trung bing cong cua mau so va tu so labang 55 ?

biet so A be hon trung binh cong cua so a va cac so 1991 ;2014 va 2031 la 7 don vi tim so A 

biet so a be hon trung binh cong cua so a va cac so 1991 ; 2014 va 2032la 7 don vi . tim so a .

Trung binh cong cua14 so le cach deu nhau la2014 biet so cuoi hon so dau la2014 tim so dau va so cuoi cua day do