Question

Кітап үшінші бетінен бастап 3 цифрымен нөмірленген. Кітаптың барлық беттері 1315 цифрмен нөмірленген. Кітаптың неше беті нөмірленген? А. 432 бет В. 475 бет С. 448 бет D. 450 бет.

Answer 1

От 3 до 9 - 7 цифр, 
от 10 до 99 -90 цифр по две цифры значит 90*2=180
всего получается 7 цифр+180цифр=187 . остальные страницы с трехзначными числами поэтому 1315-187=1128;
1128:3=376 стр
Всего получается = 99+376=475 стр 
ОТВЕТ - 475 стр

Answer 2

According to the online translation tool, the text you entered is in Kazakh and it means:

Answer in detail. The book is numbered with 3 digits starting from the first page. All pages of the book are numbered with 1315 digits. How many pages are numbered in the book? A. 432 pages B. 475 pages C. 448 pages D. 450 pages.

To solve this problem, we need to find the number of pages that have 1, 2, and 3 digits, and then subtract them from the total number of pages. The number of pages that have 1 digit is 9, the number of pages that have 2 digits is 90, and the number of pages that have 3 digits is 900. Therefore, the number of pages that have 4 digits is 1315 - 9 - 90 - 900 = 316. The answer is C. 448 pages.