Question 40936
List the possibilities:
bgg, gbg, ggb-----3 ways
bbb, gbb, bgb, bbg, ggb, bgg, gbg, ggg----8 ways

Probability of 2 girls and one boy in a family of 
three is 3/8

Another way to do this is [3C2](1/2)^3 = 3/8 if you
have studied independent events and combinations.

Cheers,
Stan H.