A woman is expecting triplets. Assume that the probabilities of any given baby being a boy or a girl are equal (50%). Express your answers as fractions.
What is the probability that there are two girls and one boy?
What is the probability that all 3 babies are girls?

Question

A woman is expecting triplets. Assume that the probabilities of any given baby being a boy or a girl are equal (50%). Express your answers as fractions.
What is the probability that there are two girls and one boy?
What is the probability that all 3 babies are girls?

anonymous · Answer

3/9 i believe

ybarrap · Answer

There are 3 ways of having 2 girls one boy
BGG
GBG
GGB

There are 8 ways of having 3 children with 0, 2 or 3 girls
BBB
BBG
BGB
BGG
GBB
GBG
GGB
GGG

So probability of 2 girls and 1 boy is 3/8

You have all the data here and technique to solve the last problem.

Does this make sense?