this is the last question i need help with, please!!!

A family has 4 children. A tree diagram or systematic list can be used to show how many ways the children could have been born, from first born to last born. The ordering of children can be described with G's and B's. For example, GGBB or GBGB.

Determine how many ways the family could have had one boy and 3 girls. (Type a numerical value. For example: 25)

Question

this is the last question i need help with, please!!! 

A family has 4 children. A tree diagram or systematic list can be used to show how many ways the children could have been born, from first born to last born.  The ordering of children can be described with G's and B's.  For example, GGBB or GBGB.

Determine how many ways the family could have had one boy and 3 girls.  (Type a numerical value.  For example: 25)

rayep12 · Answer

BGGG,GBGG,GGBG,GGGB
SO 4