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MathNet 2024-part-02 — 168 problems (EN–VI) Question 9

Math Olympiad Vault · MathNet 2024-part-02 — 168 problems (EN–VI)

Question 9

The number $\sqrt{2}$ is on the computer screen. In one step, Juku can multiply the number currently on the screen by any positive rational number or add any natural number to it. Is there a positive integer $n$ such that every number that Juku can get after a finite number of steps can be obtained by at most $n$ steps? If so, find the least suitable $n$.