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MathNet 2003 — Part 03 Question 34

Math Olympiad Vault · MathNet 2003 — Part 03

Question 34

The numbers $112$, $121$, $123$, $153$, $243$, $313$, and $322$ are among the rows, columns, and diagonals of a $3 \times 3$ square grid of digits (rows and diagonals read left-to-right, and columns read top-to-bottom). What 3-digit number completes the list?