take for example

(1) The intersection of A and B is not equal to A. You can first draw the range of A on the number axis, which is -2 to 4, and then you can see where the range of B should be to meet the requirements. It should be obvious at this time that A should be greater than or equal to 2. Note here that A can be equal to 2, and pay special attention to this equal sign when doing set questions.

As for 2, do it yourself according to this method. If not, I'll tell you again.

Ps: What matters is the method of solving the problem, not how many questions are done.