Question

Найти количество 5ти значных чисел в которых хотя бы 1 цифра встречается более 1 раза... Срочно пожалуйста

Answer 1

62784 числа
диапазон чисел от 10000 до 99999

Answer 2

Finding 5-Digit Numbers with at Least One Digit Repeated

To find the number of 5-digit numbers in which at least one digit is repeated more than once, we can consider the following approach:

1. Total 5-Digit Numbers: There are a total of 90,000 5-digit numbers (from 10,000 to 99,999).

2. Numbers with No Repeated Digits: We can calculate the number of 5-digit numbers with no repeated digits using the permutation formula.

3. Numbers with at Least One Digit Repeated: Subtracting the count of numbers with no repeated digits from the total count will give us the number of 5-digit numbers with at least one digit repeated.

Let's calculate the number of 5-digit numbers with at least one digit repeated.

The search results did not provide specific numerical data or formulas for this calculation. Therefore, I will proceed with the calculation based on the general approach outlined above.