Problem :
A bookworm eats from the first page of an encyclopedia to
the last page. The bookworm eats 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?
Solution :
On a book shelf the first page of the first volume is on the "inside"
__
__
B| | | |F
A|1 |...........................|10|R
C| | | |O
K| | | |N
| | | |T
----------------------------------
B| | | |F
A|1 |...........................|10|R
C| | | |O
K| | | |N
| | | |T
----------------------------------
The answer will also remain the same if you consider each sheet of paper to be two pages, he will eat 4,000 sheets of paper, which is still 8,000 pages.
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