math (brainteaser)
posted by Anonymous .
The pahges in jacks book are numbered from the number 1, there are 555 didgits ow many pages in Jacks book

There are 9 digits on pp 19
There are 90 digits on pp 1099
That's 99 digits before page 100
The rest of the pages have 3 digits each.
55599 = 456
456/3 = 152
So there are 99 + 152 = 251 pages 
Oops  I see an error
There are 90 2digit numbers, making 180 digits.
555  9  180 = 366
So, there are 122 3digit pages, making 221 pages in all.
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