8. An experiment consists of recording boy–girl composition of families with 2 children.
(i) What is the sample space if we are interested in knowing whether it is a boy or girl in the order of their births?
Let B denote the event a boy is born,
G denote the event a girl is born
The required sample space with a boy or girl in the order of their births is:
S = {BB, BG, GB, GG}