ace luu y 3con so nay cua dai KG: 2,5,9...minh phat hien toi 4cau ve ab, xc... ai trung keo thi quot manh nhe, thu tu ntn thi minh ko bit
Thay dan xc cua Huynh, chiu kho them ti lam lum 038 roy, dung la ko co loc. 0, 0, 3, 3, 8, 9....6 con nay chon 3 oanh xc, 4 con oanh 4 cang, ma ko trung,,