mình làm duoc roi, chia se cho cac ban luon.
- b1: chon khung ma minh muon to mau theo dieu kien (gia su to mau tat ca nhung o co gia tri lon hon 10)
- b2: chon menu HOME ==> chon muc Conditional Formatting==>Highlight Cells Rules==>More Rues==>Chon Fotmat only cells that contain>>Cell value>>greater than (co the chon muc khac tuy theo dieu kien)>>10 (gia tri dien vao theo dieu kien_trong VD nay gõ vao so 10)>>Format (chon màu can tô)==>ok