A family has four children. If the genders of these children are listed in the order they are born, there are sixteen possible
outcomes: BBBB, BBBG, BBGB, BGBB, GBBB, BGBG, GBGB, BGGB, GBBG, BBGG, GGBB, BGGG, GBGG, GGBG, GGGB, and GGGG.
Assume these outcomes are equally likely. Let X represent the number of children that are girls. Find the probability distribution of
Find the number of possible values for the random variable X