Question 376302
Out of {{{4}}} newborns, you get {{{2^4=16}}} possible outcomes.
{{{BBBB=4 B}}}
{{{BBBG=3  B}}}
{{{BBGB=3  B}}}
{{{BBGG=2  B}}}
{{{BGBB=3  B}}}
{{{BGBG=2  B}}}
{{{BGGB=2 B}}}
{{{BGGG=1  B}}}
{{{GBBB=3  B}}}
{{{GBBG=2  B}}}
{{{GBGB=2  B}}}
{{{GBGG=1  B}}}
{{{GGBB=2  B}}}
{{{GGBG=1  B}}}
{{{GGGB=1  B}}}
{{{GGGG=0  B}}}
So then the probability is,
4 boys:{{{P(4 B)=1/16}}}
3 boys:{{{P(3 B)=4/16=1/4}}}
2 boys:{{{P(2 B)=6/16=3/8}}}
1 boys:{{{P(1 B)=4/16=1/4}}}
0 boys:{{{P(0 B)=1/16}}}