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MathNet 2023-part-01 — 191 problems (EN–VI) Question 71

Math Olympiad Vault · MathNet 2023-part-01 — 191 problems (EN–VI)

Question 71

Let $a_1, a_2, \dots, a_{2023}$ be positive real numbers with
$$
a_1 + a_2^2 + a_3^3 + \dots + a_{2023}^{2023} = 2023.
$$
Show that
$$
a_1^{2023} + a_2^{2022} + \dots + a_{2022}^2 + a_{2023} \gt 1 + \frac{1}{2023}.
$$