JEE Main · Maths · Probability
Conditional Probability in Infinite Games
JEE Main asked Conditional Probability in Infinite Games 3 times in 3 of the 108 shifts Lumi analysed, in 2023 and 2024. It belongs to Conditional Probability, in Probability (Maths). The longest wait between two years asking it was 1 year. In 2023 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 2 of 8
- First asked
- 2023
- last in 2024
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2023 and 2024. 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: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 2 in 12 shifts · 2024: 1 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: multi-step.
- Probability of event in even-numbered trial
- Probability of tosses until first success
Difficulty
2 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.
- 29 Jan 2024, Shift 1 · Q19A fair die is thrown until 2 appears. Then the probability, that 2 appears in even number of throws, isMediumSingle correct
- 12 Apr 2023, Shift 1 · Q30A fair faces die is rolled repeatedly until a number less than appears. If the mean of the number of tosses required is…MediumNumerical value
- 11 Apr 2023, Shift 2 · Q30Let the probability of getting head for a biased coin be . It is tossed repeatedly until a head appears. Let be the…HardNumerical value
Shifts: 11 Apr 2023, Shift 2, 12 Apr 2023, Shift 1, 29 Jan 2024, Shift 1.
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
- Multiplication Rule of Probability2× · 2021
- Reduced Sample Space Method2× · 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