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The Bookworm

A bookworm eats from the first page of an encyclopedia to the last page in a straight line. The encyclopedia consists of ten 1000-page volumes and is sitting on a bookshelf in the usual order. Not counting covers, title pages, etc., how many pages does the bookworm eat through?

        __                             __
      B|  |                           |  |F
      A|1 |...........................|10|R
      C|  |                           |  |O
      K|  |                           |  |N
       |__|                           |__|T

On a book shelf the first page of the first volume is on the “inside”, so the bookworm eats only through the cover of the first volume, then 8 times 1000 pages of Volumes 2 – 9, then through the cover to the 1st page of Vol 10 for a total of 8,000 pages.
Note: The question asks how many pages, not how many sheets of paper.

Posted in Brain Teasers


4 Comments on "The Bookworm"

Dinesh Bhimsaria says
October 21, 2016 @ 02:38


Scott says
December 5, 2016 @ 09:40

Why would the answer not be 10,000?? The reasoning makes absolutely no sense.

Bridget says
December 6, 2016 @ 07:25

Difficult logic

Isla says
July 18, 2018 @ 15:19

I agree with Scott!

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