Mathematics · Real Analysis
Consider ℝ with the usual topology. Which of the following subsets is NOT compact?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1{1/n : n ∈ ℕ}✓
- 2{1/n : n ∈ ℕ} ∪ {0}
- 3(0, 1)
- 4[0, 1]
Correct answer
{1/n : n ∈ ℕ}
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