提问一道GRE数学题A printer numbered consecutively the pages of a bo

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提问一道GRE数学题
A printer numbered consecutively the pages of a book,beginning with 1 on the first page.In numbering the pages,he printed a total of 189 digits.
比较the number of pages in the book与100大小
100是3个digits,那189digits的数肯定比100大呀?搞不懂ing

一定比100小,但是其他人的解释没看懂,书是双面打印的；最后一页为189就说明书的内容共95页；95*2=190.如果非要加上书皮及其他不再页数范围内的就没有意义了.
如果是100页的话,最后一个数字为100*2=200.

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