Question

[Ha Phuc]

Bach do Chien:

"do ban tim duoc so tron chuc lon hon 40.000 co cac chu so khac nhau ma tong cac chu so cua so do bang 10.Khi cong so do voi so viet theo thu tu nguoc lai thi duoc mot so co 5 chu so giong nhau.

Chien thach thuc:

-Neu tim duoc so do thi sao?

-Thi to cho cau di an kem tha cua chu sao.

nham mot lat,roi viet ngay hai so do ra giay.Chien than phuc roi dua ban di an kem.

cac ban cung thu suc nhe