数学: 有TS-1和TS-2两种汽车车牌号编号系统,其中一种 has 4 digits, each from 0 to 9, followed by 2 letters except (A\E\I\O\U\Y),另外一种 has 2 digits, each from 0 to 9, followed by 4 letters except (A\E\I\O\U\Y) 问what is the fraction that the possible numbers of 其中一种 are the possible numbers of 另外一种 选项有1/8,1/4,2/5,4/5等分数……最小的是1/8,最大的是4/5 此题我当时看了很多遍都觉得题目有错。。。所以最后瞎蒙了一个 如果后来有考到的NN们最好也帮助回忆一下题目哈!