List all of the possible outcomes (B will represent ’boy’ and G for ’girl’):
BBB
BBG
BGG
BGB
GBB
GBG
GGB
GGG
There are eight possible outcomes, (remember that having the oldest child a boy and the other two girls, BGG, is not the same as the middle child a boy and the other two girls, GBG, which is not the same as the youngest child a boy and the other two girls, GGB, so these all needed to be counted as separate outcomes).
#Genetics #ruleOfProbability #statictics #probabilityProblems