Assume that couple will have three children, letting B denote a boy and G denote a girl.
a) Draw a tree diagram depicting the sample space outcomes for this experiment.
b) List the sample space outcomes that correspond to each of following events:
1) All 3 children will have same gender.
2) Exactly two of the three children will be girls
3) Exactly one of the three children will be girl
4) None of the three children will be a girl
c) Suppose that all sample space outcomes are equaly likely, determine the probability of each of events given in part b.