M-PRO-014Higher onlyReview: Pending

Solve reverse probability and missing-value problems

Probability · Combined events (T-PRO-005)

v1 mapping, pending teacher review. Only AQA and Edexcel are mapped so far. The first 3 pilot worksheets and their worked answers are available; remaining worksheets are coming soon. All videos are still coming soon.

Retrieval: Form an equation from a probability
Fluency: Unknown counts and branch probabilities
Reasoning: Explain when to add, multiply or update a probability.
Application: Recover a bag's contents from probability information
Common misconception: Without replacement, later probabilities can change.

Video brief

Model how to solve reverse probability and missing-value problems. Explain each step; pause for a matching shadow question.

Planned video: V-PRO-014 · Video coming soon

Worksheets

Worksheets coming soon

Note: Scope and tier apply to this skill; tag each generated variant separately.