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Saturday, 31 October

JEE Main · Maths · Permutations and Combinations

Selection of One or More Objects

JEE Main asked Selection of One or More Objects 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2023 and 2024. It belongs to Permutations and Combinations (Maths). The longest wait between two years asking it was 2 years. In 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2021
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Maths questions.

00.050.10’170’200.03’210’220.07’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 1 in 12 shifts · 2024: 2 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
  • 20242 of 18
  • 20231 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Selection with minimum from each section
  • Count selections with repeated letters

Difficulty

Easy 1Medium 1Hard 2

2 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 30 Jan 2024, Shift 2 · Q23In an examination of Mathematics paper, there are 20 questions of equal marks and the question paper is divided into three sections : AA,…MediumNumerical value
  2. 8 Apr 2024, Shift 2 · Q5The number of ways five alphabets can be chosen from the alphabets of the word MATHEMATICS, where the chosen alphabets are not necessarily…HardSingle correct
  3. 8 Apr 2023, Shift 1 · Q1Let the number of elements in sets AA and BB be five and two respectively. Then the number of subsets of A×BA \times B each having at…EasySingle correct
  4. 27 Aug 2021, Shift 2 · Q82Let S={1,2,3,4,5,6,9}S = \{1, 2, 3, 4, 5, 6, 9\}. Then the number of elements in the set T={A⊆S:A≠ϕT = \{A \subseteq S : A \neq \phi and the sum of all the…HardNumerical value

Shifts: 27 Aug 2021, Shift 2, 8 Apr 2023, Shift 1, 30 Jan 2024, Shift 2, 8 Apr 2024, Shift 2.

Same topic

Other ideas in Permutations and Combinations

Permutations and Combinations has 33 ideas JEE Main has asked; 20 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas