tim hieu cua so lon nhat co 3 chu so co tong cac chu so la 17 va so be nhat co 3 chu so co tong cac chu so bang 17
tim hieu cua so lon nhat co bon chu so va so be nhat co bon chu do ,biet rang tong cac chu so cua moi so do bang 15.
Tim mot so neu lay so do tru di so lon nhat co bon chu so va co tong cac chu so bang 30 thi duoc so be nhat co 5 chu so
viet so lot nhat co bon chu soma tong cac chu so bang 9,hieu chu so hang don vi va hang nghin la 5
so lon nhat co 5 chu so ma tong cua no la 9
so lon nhat co 4 chu so khac nhau ma tong cac chu so cua so do bang 10
Bài 1:
Tu cac chu so 3,4 va 6 Lan da viet tat ca cac so co 3 chu so khac nhau .Hoi Lan da viet duoc bao nhieu chu so ?
Bài 2:
Đe danh so trang cua mot cuon sach day 48 trang can bao nhieu chu so ?
Bài 3:
Biet thua so thu nhat la 1 so co 4 chu so . tim chu so hang nghin cua thua so thu nhat
Bài 4:
viet so chan be nhat co 4 chu so khac nhau ma tong cac chu so la 15
Bài 5:
viet so le lon nhat co 4 chu so va co tong cac chu so bang 15
Tong cua hai chu so la so lon nhat co ba chu so khac nhau. Mot trong hai so do la so nho nhat co ba chu so khac nhau. Tim so kia?
Tim so lon nhat co 4 chu so khac nhau ma tong cua chung bang 10.