Answer:
8. F) -5
9. D) (-2,3)
10. J) -10
I think the first one might be 18 second might be 10
I think it is, I have no clue.
Here's some examples though, 5 example of not well defined sets: - Number of fire damages. - Number of reported crime scenes. ... - Numbers of illegal settlers.
Red, blue, yellow, green, purple is well-defined since it is clear what is in the set.
