Co 2 thung dung dau . Sau khi ban 18 l tu thung thu 2 thi thung thu 2 con nhieu hon thung thu nhat hai chuc lit . Hoi luc dau thung thu nhat co it hon thung thu hai bao nhieu lit dau ?
giai nhanh nha minh cho 23 cai nha !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!