JEE Main · Maths · Probability
Reduced Sample Space Method
JEE Main asked Reduced Sample Space Method 2 times in 2 of the 108 shifts Lumi analysed, all in 2021. It belongs to Conditional Probability, in Probability (Maths). In 2021 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 1 of 8
- First asked
- 2021
- the only year
- Pattern
- Gone quiet
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Maths questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 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.
How JEE Main framed it
Numerical value is the usual form. Skill tested: calculation.
- Conditional probability for two dice throws
- Conditional probability from distribution table
Difficulty
1 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 27 Aug 2021, Shift 2 · Q88The probability distribution of random variable X is given by : | X | 1 | 2 | 3 | 4 | 5 | | P(X) | K | 2K | 2K | 3K | K | Let…MediumNumerical valueHas a figure
- 3 Aug 2021, Shift 2 · Q78A dice is thrown twice. If is the event that the sum of numbers appearing on them is 7 and is the event that number 5 appears at…EasySingle correct
Shifts: 3 Aug 2021, Shift 2, 27 Aug 2021, Shift 2.
Same topic
Other ideas in Conditional Probability
Conditional Probability has 18 ideas JEE Main has asked; 5 of them came up in more than one question. The 12 most asked are below.
- Independence Criterion5× · 2024
- Conditional Probability Definition5× · 2022
- Conditional Probability in Infinite Games3× · 2024
- Multiplication Rule of Probability2× · 2021
- Bayes' Theorem with Partial String Evidenceonce · 2026
- Drawing Without Replacementonce · 2026
- Law of Total Probabilityonce · 2026
- Conditioning on a Union of Eventsonce · 2025
- Memoryless Property in Discrete Trialsonce · 2024
- Conditional Probability with De Morgan's Lawsonce · 2022
- Conditional Probability in Infinite Gamesonce · 2021
- Conditioning on Dice Sumsonce · 2021