Yes same!

I am also having a very hard time with this. I have watched the video a few times, but am still lost with trying to 'add' up the relationships. The video does not include what to do when you have the contrapositives for each statement condition.

I am having a hard time with this exercise. I am able to to set up each part of the statement. It is when I have to start 'adding' them together I get completely confused. I have watched the video several times, but the example used is very simple and does not contain any negations, so it is not helping me here. Greatly appreciate any advice or pointers!

I am also confused by this question. In my mind 'formation' is a verb, so how can it be a subject?