Chung to rang : (9m+9)(9m+2)(9m+3)(9m+4) chia het cho 5 voi moi m thuoc N
Ai tra loi cau hoi nay toi co 10 nick GIUP TOI GIAI TOAN se vao tung nick de an like cho nguoi --do
- Ai tra loi truoc duoc 3 like
-xong nhi duoc 2 like
-Ai tra loi chinh xac duoc 5 like
GIAI THICH luon nhe cac ban
-nhung nguoi con lai toi cho 1like