Probability Trees

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Question 6
Hard

Sarah has two boxes of marbles, Box A and Box B.

There are 4 green marbles and 2 yellow marbles in Box A.

There are 3 green marbles and 7 yellow marbles in Box B.

Sarah takes at random a marble from each box.

a.

Complete the probability tree diagram.

A probability tree diagram for two boxes, Box A and Box B. Box A has two branches: Green and Yellow. Box B has four branches: Green, Yellow, Green, and Yellow. Each branch has a dotted line for a probability value.

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b.

Work out the probability that Sarah takes two green marbles.

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Probability Trees Questions

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