Mathematics · Topology
In a discrete metric space (X, d), which of the following statements is true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Singletons are both open and closed sets✓
- 2Singletons are neither open nor closed sets
- 3Singletons are closed sets but not open sets
- 4Singletons are open sets but not closed sets
Correct answer
Singletons are both open and closed sets
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