Question: 4. Supposed we have 3 red, 4 blue and 5 green balls in a bag. We draw two balls from this bag without replacement. Construct

4. Supposed we have 3 red, 4 blue and 5 green balls in a bag. We draw two balls from this bag without replacement. Construct a tree diagram for the experiment showing all final outcomes with attached probabilities. Use this to find the probability that exactly one of our two balls is red

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