Question

Сколько раз в записи первых 100 натуральных чисел встречается цифра 7

Answer 1

20 раз:
7, 17, 27, 37, 47, 57, 67, 87, 97
70, 71, 72, 73, 74, 75, 76, 77, 78, 79

Answer 2

Count of Number 7 in the First 100 Natural Numbers

To find out how many times the digit 7 appears in the first 100 natural numbers, we can simply count the occurrences of the digit 7 in the numbers from 1 to 100.

The digit 7 appears in the following numbers within the first 100 natural numbers: - 7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97

So, the digit 7 appears 20 times in the first 100 natural numbers.