I need the answer of 36

Probability from a Sample Space. In Exercises 33-36, use the given sample space or construct the required sample space to find the indicated probability. 33. Three Children Use this sample space listing the eight simple events that are possible when a couple has three children (as in Example 2 on page 135): {bbb, bbg, bgb, bgg, gbb, gbg, ggb, ggg). Assume that boys and girls are equally likely, so that the eight simple events are equally likely. Find the probability that when a couple has three children, there is exactly one girl. 34. Three Children Using the same sample space and assumption from Exercise 33, find the probability that when a couple has three children, there are exactly two girls. 35. Four Children Exercise 33 lists the sample space for a couple having three children. After identifying the sample space for a couple having four children, find the probability of getting three girls and one boy (in any order). 36. Four Children Using the same sample space and assumption from Exercise 35, find the probability that when a couple has four children, all four are of the same gender