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MathNet 2010 — Part 02 Question 5

Math Olympiad Vault · MathNet 2010 — Part 02

Question 5

Place the numbers $663, 664, 665, 666, 667, 668, 669, 670$ and $671$, without repeating, in a table $3 \times 3$, in such a way that the sum in each row, each column and each diagonal is $2001$. If this is not possible, justify your answer.