GCSE Maths Practice: tree-diagrams

Question 5 of 9

Find probability both balls are blue.

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\( \begin{array}{l}\textbf{Bag: 4R,3B,3G. Draw 2 balls.} \\ \text{Find probability both are blue.}\end{array} \)

Choose one option:

P(Both Blue) = P(First Blue) × P(Second Blue|First Blue)

Use conditional probability without replacement.