Home > Probability > CBSE > 0ca42afe-4e92-4f3b-91b8-5aa01b9b9658
Not the exact question you were looking for?

Paste your question to our Mathbee AI Mentor below to get an instant step-by-step solution.

Probability
Oswaal
CBSE
Grade 12

Question:

Bag I contains 4 red and 5 black balls and Bag II contains 3 red and 4 black balls. One ball is transferred from Bag I to Bag II and then two balls are drawn from Bag II. The drawn balls are found to be black. Find the probability that the transferred ball was black.

Step-by-Step Solution

Key Concept: Bayes Theorem calculation yields 20/37.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer:
Mathbee AI Mentor (Free Demo)

Confused by the solution? Ask the AI to explain a specific step, tell you where you went wrong, or break down the key trap in this question.

Master Probability with Mathbee

Practice this topic under real exam conditions with strict timers, or ask our AI Mentor to explain the concepts step-by-step.

Start Practicing for Free