<PRE><B>Question 665207</B>
In the first 99 pages there are:
1 one in the first 9 pages, 
11 ones in pages 10-19 (one each for 10 and 12-19, and two for 11)
8 ones in pages 20-99 (21, 31, 41, 51, 61, 71, 81, and 91)
So we have 20 ones in the first 99 pages.
  
Likewise we have 20 ones in pages 200-299, 20 ones in pages 300-399, and 20 ones in pages 400-499.  There are 0 ones on page 500.
  
For pages 100-199, there are 100 ones for the hundreds digits in addition to the 20 ones found in the tens and ones digits.
  
So we have a total of 20 + 120 + 20 + 20 + 20 = 200 ones on the page numbers.
</PRE>