Question

How many digits must score typesetter to number 191 pages of a book?

Answer 1

Пошаговое объяснение:

Страницы в книгах нумеруются с 3 страницы.

С 3 по 9 стр - по 1 цифре -  7 шт

С 10 по 99 - по 2 шт - 2*90 = 180 шт

С 100 по 191 - по 3 шт = 3*92 = 276 шт.

7 + 180 + 276 = 463 шт всего цифр - ответ.

Answer 2

To determine the number of digits required to typeset the page numbers of a book with 191 pages, we need to analyze the pattern of the page numbers.

For page numbers up to 9, we have 1 digit each (pages 1-9). For page numbers from 10 to 99, we have 2 digits each (pages 10-99). For page numbers from 100 to 191, we have 3 digits each (pages 100-191).

So, let's calculate the number of pages falling into each category:

1-digit page numbers: 9 pages (from 1 to 9) 2-digit page numbers: 90 pages (from 10 to 99) 3-digit page numbers: 191 - 9 - 90 = 92 pages (from 100 to 191)

To calculate the total number of digits, we multiply the number of pages in each category by the number of digits per category:

1-digit page numbers: 9 pages × 1 digit = 9 digits 2-digit page numbers: 90 pages × 2 digits = 180 digits 3-digit page numbers: 92 pages × 3 digits = 276 digits

Adding these up, we get:

9 digits + 180 digits + 276 digits = 465 digits

Therefore, the typesetter would need to score a total of 465 digits to number 191 pages of a book.