so tu nhien be nhat co 3 chu so khac nhau biet tong cac chu so la 22 la so nao?
so tu nhien nho nhat co 4 chu so khac nhau ma tong cac chu so la 21 la so nao
so tu nhien lon nhat co ba chu so ma tong cac chu so bang 15 la so nao?
So tu nhien be nhat cac chu so khac nhau ma tong cac chu so bang 20 la so nao ???
14m5cm=...m
Tong 2 so gap 4 lan so be va so lon hon so be 198. Tìm số bé.
Tong cua 2 so thap phan lon nhat va be nhat co 2 chu so la bao nhieu ?
So be nhat co 3 chu so chia het cho 9 la so co tong cac chu so la ...........?
Tích của 2 số liên tiếp là 1 số .......
so tu nhien lon nhat co 4 chu so khac nhau ma tong cac chu so bang 21 la so nao
so tu nhien lon nhat co 4 chu so khac nhau ma tong cac chu so bang 21 la so nao?
so tu nhien lon nhat co ba chu so ma tong cac chu so bang 17 la so nao
tim so tu nhien be nhat co 3 chu so co tong =22 la so nao?