Question 15
Is it possible to place the digits $0$, $1$, $2$ into unit squares of $100 \times 100$ cross-lined paper such that every $3 \times 4$ (and every $4 \times 3$) rectangle contains three $0$s, four $1$s and five $2$s?
Math Olympiad Vault · MathNet 1972 — Part 01