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Assume that the couple will have 3 children, letting B denote the boy and G denote girl.

a. Draw tree diagram depicting the sample space outcomes for this experiment.

b. Mention the sample space outocmes which correspond to each of following events:

1) All three children will have same gender.

2) Exactly two of three children will be girls

3) Exactly one of three children will be girl

4) None of the three children will be a girl

c) Supposing that all sample space outcomes are equaly likely, find out the probability of each of events given in part b.

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