Question

Пусть S(n) — сумма цифр в десятичной записи числа n. Найдите S(S(S(S(2018))))

Answer 1

Сумма суммы цифр
2018 -> 11 -> 2 - ОТВЕТ

Answer 2

Calculating S(S(S(S(2018))))

To calculate the sum of the digits of the sum of the digits of the sum of the digits of the sum of the digits of 2018, we can proceed step by step.

1. First, let's find the sum of the digits of 2018: - S(2018) = 2 + 0 + 1 + 8 = 11

2. Next, we find the sum of the digits of the result from step 1: - S(S(2018)) = S(11) = 1 + 1 = 2

3. Then, we find the sum of the digits of the result from step 2: - S(S(S(2018))) = S(2) = 2

Therefore, S(S(S(S(2018)))) = 2.

This calculation is based on the arithmetic operations and the properties of the sum of digits.