Question:medium

Which of the following set is open in the real line $\mathbb{R}$?

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Strict inequalities ($>$ or $<$) generate open sets/intervals like $(a, b)$. Non-strict inequalities ($\geq$ or $\leq$) include boundary points and generate closed sets/intervals like $[a, b]$.
Updated On: Jul 29, 2026
  • $\{x \mid |x| \geq 2\}$
  • $\{x \mid |x| > 2\}$
  • $\{x \mid 0 \leq x < 2\}$
  • $\{x \mid -\infty < x \leq 0\}$
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The Correct Option is B

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