Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2013 Question 11

Math Olympiad Vault · MathNet 2013

Question 11

For which positive integers $k$ can the integers $1, 2, 3, \dots, (2k)^2$ be arranged as a $2k \times 2k$ table in such a way that all row sums and column sums were of the same parity, opposite to that of $k$?