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VIDEOS ON CONDITIONAL PROBABILITY
Click on this button to go to Videos on TREE DIAGRAMS
VIDEOS on TREE DIAGRAMS
Here is an excellent video on how to calculate conditional probabilities from Venn Diagrams
Here is an exam question on Venn Diagrams and Conditional probability. The links on the Right hand side lead to videos which go through the solutions. Try to solve the problem yourself first, then go to the videos to check your solution.
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Solution for Part (a)
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=610&solution=6.1



Solution for Parts (b),(c),(d)
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=610&solution=6.2



Solution for Part (e)
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=610&solution=6.3

Here is another Venn Diagram and Conditional Probablity question with  video solution
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Solution for problem:
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=602&solution=5.1
Here is another exam question with video Solutions
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Part (a) Solution
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=601&solution=4.1

Part (b) Solution
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=601&solution=4.2
Part (c) Solution
http://www.examsolutions.net/a-level-maths-papers/worked-solution/worked-solution.php?paper_id=601&solution=4.3