In a 3- children family.

Question

Find the probability of having at least two girls
in a three children family

Answer 1

There are 8 possible outcomes in a three children family:

BBB, BBG, BGB, GBB, GGG, GGB, GBG, BGG

Out of these, there are 4 outcomes where there are at least two girls: GGG, GGB, GBG, BGG

So, the probability of having at least two girls in a three children family is 4/8 = 1/2 or 0.5.