cho 3 chu so khac nhau va khac 0 co the lap duoc bao nhieu so khac nhau tu ba chu so do biet tong chieu cac so do la 3330 hieu so lon nhat va be nhat la 549 tim 3 chu so do

so cac so chan co 4 chu so chia het cho 9 .

so tu nhien be nhat co 4 chu so khac nhau .

so tu nhien be nhat co tong cac chu so bang 12 .

 số tự nhiên lớn nhất có ba chữ số khác nhau chia hết cho 2, 3,4,5,6.

tim ty so giua x va y biet : X x4 = 32 va 42 : y = 7 

3737 ; 37

 4phan 9 cua 81.

tim hieu cua hai so biet tong hai so lon nhat co ba chu so khac nhau va so be bang 1/2 so lon

Cho ba chu so 1;3;5 viet tat ca cac so co 3 chu so khac nhau (moi chu so chi dc viet 1 lan trong moi so )b;tinh tong ,hieu cua so lon nhat va so be nhat 

tinh trung binh cong cua so lon nhat co ba chu so khac nhau va so le be nhat co ba chu so

tinh hieu cua so lon nhat co 6 chu so khac nhau va be nhat co 6 chu khac nhau

viet so be nhat co 6 chu so hang nghin la 8 chu so hang chuc la 5

tu ba so doi 1 khac nhau va khac 0 ta lap dc tat ca cac so co 3 Chu so doi 1 khac nhau . Biet rang tong cac so lap dc la 2886 , hieu giua so lon nhat va so be nhat trong cac so lap dc la 495 . Cac chu so do la : .....;......;........(viet cac chu so theo gia tri tang dan )

GIUP MIH NHA MIH GAP LAM

cho 4 chu so:8;4;6;2

 hieu cua so lon nhat co 4 chu so khac nhau va so be nhat co 4 chu so khac nhau dc lap tu cac chu so tren la

Tim 2 so biet tong cua chung la so lon nhat co 4 chu so khac nhau va hieu la so be nhat co 4 chu so