Từ Khoá: 2-mot-chiec-hop-co-chua-5-tam-the-cung-loai-duoc-danh-so-lan-luot-la-3-5-6-7-9lay-ngau-nhien-dong-thoi-2-tam-the-tu-hopa-xac-dinh-khong-gian-mau-va-so-ket-qua-co-the-xay-ra-cua-phep-thub-tinh-xac-suat