Câu hỏi 14
Tính
$$
\sum_{i=1}^{4} \sum_{t=1}^{4} \sum_{e=1}^{4}\left\lfloor\frac{i t e}{5}\right\rfloor
$$
$$
\sum_{i=1}^{4} \sum_{t=1}^{4} \sum_{e=1}^{4}\left\lfloor\frac{i t e}{5}\right\rfloor
$$
MathNet 2024 — lô 27 câu Câu hỏi 14
Math Olympiad Vault · MathNet 2024 — lô 27 câu