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MathNet 2026 — Part 10 Question 76

Math Olympiad Vault · MathNet 2026 — Part 10

Question 76

With two properly chosen weights and a balance scale, it is possible to determine the weight of an unknown object known to weigh an integer number of pounds from $1$ to $n$. Find the largest possible value of $n$.

Remark. The balance scale tells whether the weights placed on each side are equal and, if not, which side is heavier. It may be used an unlimited number of times.