Question 84
Let $q(n)$ denote the sum of the digits of the natural number $n$. Determine
$$q\left(q\left(q\left(2000^{2000}\right)\right)\right).$$
$$q\left(q\left(q\left(2000^{2000}\right)\right)\right).$$
MathNet 2000 — Math Olympiad Vault Question 84
Math Olympiad Vault · MathNet 2000 — Math Olympiad Vault