In a family of 4 children what is the probability of getting

Solution

sample space:

1) bbbb
2)bbbg
3)bbgb
4)bgbb
5)gbbb
6)gggg
7)gggb
8)ggbg
9)gbgg
10)bggg
11)bbgg
12)ggbb
13)bgbg
14)gbgb
15)gbbg
16)bggb

14 are matching

so probability= 14/16