Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2023-part-07 — 187 problems (EN–VI) Question 63

Math Olympiad Vault · MathNet 2023-part-07 — 187 problems (EN–VI)

Question 63

Each cell of a $3 \times 3$ grid is labeled with a digit in the set $\{1,2,3,4,5\}$. Then, the maximum entry in each row and each column is recorded. Compute the number of labelings for which every digit from $1$ to $5$ is recorded at least once.