4. A couple plans to have five children. How many possible combinations of males and females are possible? (For this type of problem, first identify all possible states, and the number of draws you'll make from those states. See Proj 1.]

2^5=32

5. What is the probability of the couple above having all boys?

^5= 1/32

6. What is their probability of having at least one girl among the five children?

1-1/32=31/32