Question 71
We compute the square of each of the numbers from $1$ to $2019$. We take the last digit from each of the resulting squares, and then we add those $2019$ digits together.
What number do we get?
What number do we get?
MathNet 2019-part-04 — 184 problems (EN–VI) Question 71
Math Olympiad Vault · MathNet 2019-part-04 — 184 problems (EN–VI)