Hi, the question involves 3 parts.

1.) A family has 3 children. Event A= at least 1 girl, B= children of both genders. Show that A and B. are independent.

2.) If there are 2 children, use A, and B to show they are NOT dependent

3.) If there are 4 children use A, and B to proven they are NOT independent

It's mostly 3 that I'm not sure about, I've uploaded photos of my work

Thank you