IOM 2020, Блиц — Задача 69
The Blitz-contest of IOM-2020
Условие
The result of the decimal expression was written in the base 9 notation. How many digits “8” does it contain?
Отговори
- 10
Решение
Внимание: Непълно решение
The source contains only the answer key, no worked solution.
Answer: 10
Оригинал в Архива: iom-2020-blitz-tasks.pdf · официални решения: iom-2020-blitz-answers.pdf