Question 55
If $n$ is a positive integer, what is the smallest value that the sum of the digits of the decimal representation of $3 n^{2}+n+1$ can take?
MathNet 2019-part-02 — 184 problems (EN–VI) Question 55
Math Olympiad Vault · MathNet 2019-part-02 — 184 problems (EN–VI)