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MathNet 2023-part-05 — 191 problems (EN–VI) Question 94

Math Olympiad Vault · MathNet 2023-part-05 — 191 problems (EN–VI)

Question 94

Let $n \ge 2022$ be an integer and $A$ be a finite set so that $\{S(B) \mid B \subset A\} = \{1, 2, \dots, n\}$, where $S(X)$ is the sum of the elements of the set $X$. Find the smallest and the largest possible value of the cardinal of the set $A$.