Cau | Dung | Sai |
Co hai so tu nhien lien tiep deu la so nguyen to | ||
Co ba so le lien tiep deu la so nguyen to | ||
Moi so nguyen to deu la so le | ||
Moi so nguyen to deu co chu so tan cung la mot trong cac chu so 1,3,7,9 | ||
Ai tra loi nhanh nhat thi minh se like 3 lan | ||
Co gang len nha ! |