请教各位大侠一道数学题

How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3?

10,300; 10.030; 1,353; 1,352; 1,339

偶碰上这种题就头大，有什么好的解决方法吗 Thanks a lot

How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3?

10,300; 10.030; 1,353; 1,352; 1,339

我的解法：

十位是1，个位是3，那么我们要算的就是integers between 324,700 and 458,600 中后两位是13的数字个数。也就是从324713到458513（inclusively），中末位是13的数字的个数。排除后两位不看，也就是求3247到4585之间有多少个数（inclusively）,很容易了，4585－3247＋1＝13339。 The answer is E.