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Saturday, 31 October

JEE Main · Maths · Relations and Functions

Intervals as Subsets of R

JEE Main asked Intervals as Subsets of R 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2021 and 2022. It belongs to Sets and Relations, in Relations and Functions (Maths). The longest wait between two years asking it was 1 year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
3 of 8
First asked
2020
last in 2022
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Maths questions.

00.050.10’170.08’200.03’210.04’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20221 of 24
  • 20211 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: application.

  • Set operations on intervals of reals
  • Set operations on interval sets

Difficulty

Easy 2Medium 1Hard 0

1 of the 3 questions had a numerical answer.

Every question

All 3 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 25 Jun 2022, Shift 2 · Q1Let A={x∈R:∣x+1∣<2}A = \{x \in \mathbb{R} : |x+1| < 2\} and B={x∈R:∣x−1∣≥2}B = \{x \in \mathbb{R} : |x-1| \geq 2\}. Then which one of the following statements is…EasySingle correct
  2. 27 Aug 2021, Shift 1 · Q81If A={x∈R:∣x−2∣>1}A=\{x \in \mathbf{R} : |x-2|>1\}, B={x∈R:x2−3>1}B=\left\{x \in \mathbf{R} : \sqrt{x^2-3}>1\right\}, C={x∈R:∣x−4∣≥2}C=\{x \in \mathbf{R} : |x-4|\geq 2\} and…MediumNumerical value
  3. 9 Jan 2020, Shift 2 · Q51If A={x∈R:∣x∣<2}A=\{x\in\mathbf{R}:|x|<2\} and B={x∈R:∣x−2∣≥3}B=\{x\in\mathbf{R}:|x-2|\ge 3\}; then :EasySingle correct

Shifts: 9 Jan 2020, Shift 2, 27 Aug 2021, Shift 1, 25 Jun 2022, Shift 2.

Same topic

Other ideas in Sets and Relations

Sets and Relations has 15 ideas JEE Main has asked; 10 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas