+1313 Each page number of a 488-page book is printed one time in the book. The first page is page 1 and the last page is page 488. When printing all of the page numbers, how many more 4's are printed than 8's?
+129845 Notice, they the appear the same number of times in each group of 100 from 0 - 399
4 14 24 34 40 41 42 43 44 45 46 47 48 49 54 64 74 84 94
8 18 28 38 48 58 68 78 80 81 82 83 84 85 86 87 88 89 98
They each appear 20 times in each group of 100
But....starting at page 400 to page 488, the 4's appear
89 + 19 times = 108 times
But the 8's only appear 18 times from pages 400 - 488
So....the 4's appear 108 - 18 = 100 more times
+5265 It's ok! Good job anyway! I still know what you meant!
