so tu nhien lon nhat co ba chu so khac nhau la so bao nhieu
cho 3 chu so 1,2,4 viet duoc tat ca bao nhieu so chan co 3 chu so khac nhau tu 3 chu so da cho
so tu nhien lon nhat co 3 chu so le khac nhau
tu cac chu 3,7,9 nguoi ta co the viet bao nhieu so co 2 chu so khac nhau lon hon 45
tim so tu nhien lon nhat co 3 chu so khac nhau
tim so tu nhien co 4 chu so khac nhau lon hon 3142 ma co tong cac chu so bang 6 va chu so hang chuc be hon chu so hang don vi
co bao nhieu so co 3 chu so khac nhau 0,2,4,6,8,
hay cho biet co bao nhieu so co 3 chu so khac nhau
tu cac so (1,2,3,4,5,6) lap duoc bao nhieu so co 3 chu so chan (cac chu so khac nhau)
cac anh chi giai dung trinh do lop 3 thi em moi hieu duoc