JEE Main · Maths · Probability
Urn and Ball Transfer Problems
JEE Main asked Urn and Ball Transfer Problems once in the 108 shifts Lumi analysed, on 29 Jul 2022, Shift 2. It belongs to Bayes' Theorem, in Probability (Maths).
Updated 2026-10-24
- Times asked
- 1
- in 1 shift
- Years
- 1 of 8
- First asked
- 2022
- the only year
- Pattern
- Occasional
- asked once so far
Questions on this idea a shift, by year
2017–2026. Asked in 2022. 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: 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.
How JEE Main framed it
Single correct is the usual form. Skill tested: multi-step.
- Bayes with urn transfer
Difficulty
The question was multiple choice.
Every question
The question
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
Shift: 29 Jul 2022, Shift 2.
Same topic
Other ideas in Bayes' Theorem
Bayes' Theorem has 6 ideas JEE Main has asked; 3 of them came up in more than one question.
- Bayes' Theorem Application9× · 2026
- Theorem of Total Probability3× · 2026
- Implicit Equally Likely Priors2× · 2024
- Biased vs Unbiased Instrument Selectiononce · 2025
- Missing or Lost Card Scenariosonce · 2025