Math CentralQuandaries & Queries


Question from Shawn, a student:

A novice librarian shelved a twelve-volume set of encyclopedias in the following order from left to right. Volumes 8, 11, 5, 4, 9, 1, 7, 6, 10, 3, 12, and 2. Using her system, where will volume 13 go?

Hi Shawn.

Here's a hint: Using her system, where will volume thirteen go?

Stephen La Rocque.>

Remember, this is a library afterall. They probably have the book "names" in words, not in digits.


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