Books
Number Theory
Level
2
It takes 1629 digits to number the pages of a book. How many pages does the book have?
338
579
1629
529
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1 solution
Since there are 189 digits for pages with less than 3 digits, we can subtract 189 from 1629 digits to find the number of pages with 3 digits
1629 − 189 = 1440
1440 represents the pages with 3 digits, so number of pages with 3 digits = 1440/3 = 480
Thus, total number of pages = 480 + 90 + 9 = 579 pages