banlai' mot chiec xe buyt.o diem dung 1 co 2 nguoi len 1 nguoi xuong.Diem dung 2 co 3nguoi len 2 nguoi xuong.Diem dung 3 co 5 nguoi nen 1 nguoi xuong.Diem dung 4 co 5 nguoi nen 2 nguoi xuong .Odiem dung cuoi cung thi tren xe chang con nguoi nao ca.Hoi ten nguoi lai xe la` gi`?