8,18,28,38,48,58,68,78,80,81,82,83,84,85,86,87,88,89共18个数字含8,出现19次(88是重复的)
8.18.28.38.48.58.68.78.80.81.82.83.84.85.86.87.88.8918次
8.18.28.38.48.58.68.78.88.总共10次
9个
11