cho a la 1 so chinh phuong co 4 chu so biet 2 chu so dau va 2 chu so cuoi cua giong nhau hoi a la bao nhieu

hay cho biet co tat ca bao nhieu phan so = phan so 1/6 ma phan so la so co 2 chu so

co bao nhieu so co 2 chu so ai cha loi dung thinket ban voi minh di sai cung ket ban nhe

co bao nhieu so tu nhien co 5 chu so ma cac chu so deu lon hon 4 va doi mot khac nhau  

1.gia tri cua x³+y³-9x-54=0

2.tu 0 den 6 co the viet duoc bao nhieu chu so tu nhien co 2 chu so khac nhau

cho 5 so 0,1,2,3,4 tu cac so ay co the lap dc bao nhieu so tu nhien:

a co 5 chu so gom ca 5 chu so ay 

b co 4 chu so cac chu so khac nhau

c co 3 chu so cac chu so khac nhau

d co 3 chu so cac chu so co the giong nhau

co bao nhieu so tu nhien co 4 chu so lap boi : cac so 1,2,3 biet rang so do chia het cho 9

Khi moi nhan lop 8A , co giao chu nhiem du dinh chia lop thanh 3 to co so hoc sinh nhu nhau . Nhung sau do , lop nhan them 4 hoc sinh nua do do co giao chu nhiem chia lop thanh 4 to . Hoi lop 8A co bao nhieu hoc sinh , biet rang so voi phuong an du dinh ban dau , so hoc sinh cua moi to hien nay co it hon 2 hoc sinh ?

mot nhom ban hoc sinh gom ca nam va nu rat than thiet,bat cu hai ban trong nhom deu la ban than cua nhau.cac ban namnoi voi nhau rang:moi chung ta co so ban nam bang so ban nu.con cac ban nu noi voi nhau rang:moi chung ta co so ban nam gap doi so ban nu.(chu y:so ban cua moi nguoi chi tinh trong nhom).hoi mhomhoc sinh do co bao nhieu ban nam,bao nhieu ban nu.