Question

1.в книге пронумерованы страницы с первой по сто семьдесят вторую. Сколько цифр напечатано при нумерации страниц?

Answer 1

Цифр всего десять: 1,2,3,4,5,6,7,8,9,0, но так как нулевой страницы нет, то их 9

Answer 2

Calculating the Number of Digits in Page Numbering

To calculate the number of digits in the page numbering from 1 to 172, we can use the following approach:

1. Count the number of digits in the page numbers from 1 to 9. 2. Count the number of digits in the page numbers from 10 to 99. 3. Count the number of digits in the page numbers from 100 to 172.

Let's calculate each of these steps.

Step 1: Counting the Number of Digits in Page Numbers from 1 to 9 The page numbers from 1 to 9 each have 1 digit.

Step 2: Counting the Number of Digits in Page Numbers from 10 to 99 The page numbers from 10 to 99 each have 2 digits.

Step 3: Counting the Number of Digits in Page Numbers from 100 to 172 The page numbers from 100 to 172 each have 3 digits.

Total Number of Digits

To find the total number of digits, we add the number of digits from each step: - Number of digits for pages 1 to 9: 9 digits - Number of digits for pages 10 to 99: 180 digits (90 pages * 2 digits per page) - Number of digits for pages 100 to 172: 219 digits (73 pages * 3 digits per page)

Total Number of Digits: 9 (1-9) + 180 (10-99) + 219 (100-172) = 408 digits

Therefore, when numbering the pages from 1 to 172, a total of 408 digits are printed.