How many digits are used for printing the page numbers of a book that has 163 pages?

To find the number of digits used for printing the page numbers of a book with 163 pages, we need to determine the highest page number. Since page numbers start from 1, the highest page number in this case is 163.

To determine the number of digits in 163, we count the individual digits: 1, 6, and 3. So, there are 3 digits in the highest page number.

Since all page numbers up to 163 will have the same number of digits as 163, we can conclude that a total of 3 digits are used for printing the page numbers of the book.