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MathNet 2023-part-05 — 191 problems (EN–VI) Question 157

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

Question 157

Every positive integer greater than $1000$ is colored in red or blue in such a way that the product of any two distinct red numbers is blue. Can it happen that no two blue numbers have difference $1$?