answers already passed 2026
Proper Subset - correct answer ✔When A is a subset of B but there is some x in B that is not in A
When to use element method of proof - correct answer ✔Proving that one set is a subset of another
Disjoint - correct answer ✔When A and B have no common x at all
Union - correct answer ✔- "U"
- Set of all x in A or B or A and B
Set difference - correct answer ✔- "B - A", "B / A"
- Set of x that is in B but not A and not B and A
Intersection - correct answer ✔- "∩"
- Set of all x in both A and B
Complement - correct answer ✔- "A^c"
- Everything that is not in A
mutually disjoint - correct answer ✔- Also known as Pairwise disjoint
- Bunch of non-overlapping circles
Partition - correct answer ✔A collection of sets...