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erdos_125

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Lean 4 Statement 
theorem erdos_125 :
    answer(sorry) ↔ ({ x : ℕ | (digits 3 x).toFinset ⊆ {0, 1} } +
      { x : ℕ | (digits 4 x).toFinset ⊆ {0, 1} }).HasPosDensity
ID: ErdosProblems__125__erdos_125
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