Question

Записаны подряд натуральные числа от 1 до 999 и сколько раз в записи всех чисел встречается цифра 9

Answer 1

Вроде 99 раз:)))))))))

Answer 2

Counting the Number 9 in the Sequence of Natural Numbers from 1 to 999

To find out how many times the digit 9 appears in the sequence of natural numbers from 1 to 999, we can analyze the numbers in the sequence and count the occurrences of the digit 9.

The digit 9 appears in the following numbers in the sequence: 1. 9 2. 19 3. 29 4. 39 5. 49 6. 59 7. 69 8. 79 9. 89 10. 90 (appears twice) 11. 91 12. 92 13. 93 14. 94 15. 95 16. 96 17. 97 18. 98 19. 99

So, the digit 9 appears a total of 120 times in the sequence of natural numbers from 1 to 999.