Introduction
Welcome to today’s tutorial on JEE Mathematics Past Questions.
In this lesson, we focus on solving a probability problem involving balls of different colors. This type of question is common in JEE Mathematics examinations and is essential for students preparing for competitive exams.
Let’s get started with the questions and answers.
Question
Two balls are selected one after the other without replacement from a bag containing 4 white balls and 6 black balls.


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Key Concept for JEE
This problem tests:
- Conditional probability
- Probability without replacement
- Bayes’ theorem fundamentals (often extended in advanced JEE problems)
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Keywords
- JEE Mathematics probability past questions and solutions
- Conditional probability problems for IIT-JEE
- Probability without replacement JEE Advanced solutions
- JEE 2025 important probability questions with answers