一道英语谜题

来源:百度知道 编辑:UC知道 时间:2024/05/28 08:07:43
The Altadorian Archives are the repository of all Altadorian knowledge, science, and history. Thousands of books and scrolls populate its shelves. Amongst these books is the huge, multi-volume Encyclopedia Altadoria, volumes 1 through 9950.

The archivist misplaced his shopping list inside one of the books. He has a handy way to remember which volume he placed it in, though. The volume number was a four-digit number, in which all four digits were unique. If you take the largest possible four-digit number that can be made by rearranging the four digits, and you subtract from that the smallest possible four-digit number that can be made by rearranging the four digits, the number you get is volume number, but with the digits in reverse order.

In what volume of the Encyclopedia Altadoria did he leave his shopping list?

7960?

Altadorian 档案是所有Altadorian 知识贮藏库, 科学, 和历史。数以万计书和纸卷居住于它的架子。在这些书之中是巨大, 多卷的百科全书Altadoria, 容量1 至9950 。

管理档案者误置了他的购物单在书的当中一个里面。他有一个得心应手的方式记住哪容量他安置了它, 虽则。容量数字是一个四位数数字, 所有四个数字是独特的。如果您采取可能由重新整理做四个数字, 和的最大的可能的四位数数字您减去从那可能由重新整理做四个数字的最小的可能的四位数数字,您得到的数字是容量数字, 但以数字在逆序。

在什么百科全书的容量Altadoria 他把他的购物单留在?