Using the probability concept, the tree diagram and the probabilities are given on the image at the end of the answer.
What is a probability?
A probability is given by the number of desired outcomes divided by the number of total outcomes.
For the first branch, we consider the first counter, which considering the eight counters has these following probabilities.
Then on the second branch, we consider the probabilities for the second counter, which in the case of a blue first counter are given as follows:
The same logic is applied for the other branches given in the picture at the end of the question.
More can be learned about probabilities at https://brainly.com/question/14398287
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