I have tried solving these problems so many times already that I am literally about to lose my mind. I am freaking out because I can't finish it and I just gave myself a horrible headache which makes things worse. Please help!!!!
The sample space, that is all the possible family combinations are recorded for you at the bottom of the post. There are 8 of them. That is the sample space. Do you understand that?
GBB means that the first child is a Girl the second is a Boy and the third is a Boy.
Do you get that?
The first question is
What is the probability that the firs child is a boy? Well you count the number that have the first child as a boy and you put it over the number in the sample space. Then you simplify the fraction and that is your answer.
All but the last 2 are written in words so they should be easy enough for you to do.
Post your answers if you like and someone, maybe me, will check them for you.
I am not sure what the dot notation is for the last two question. It is probably just multiply.
I haven't looked at it hard enough to decide if this would make sense.