Question 947830
B = boy
G = girl


Sample Space for four births:


{
BBBB, 
BBBG, BBGB, BGBB, GBBB
BBGG, BGBG, GBBG, GBGB, GGBB, BGGB
BGGG, GBGG, GGBG, GGGB
GGGG
}


There are 16 ways to have 4 kids as shown above. The order matters since the one on the very left represents the first child and the one on the very right represents the fourth child.


Example: BGGB means 1st child is a boy, 2nd is a girl, 3rd is a girl, 4th is a boy