Discrete Math Unit 1 Test study guide
already passed 2026
∈ - correct answer ✔members of a set
∉ - correct answer ✔non member of a set
A ⊆ B - correct answer ✔subset - members in A are same in B
A ⊂ B - correct answer ✔proper subset - A is a subset of B but not equal to B
∅ or { } - correct answer ✔empty set - contains no members
|A| - correct answer ✔cardinality - number of members in a set ( no repetitiveness)
P(A) - correct answer ✔power set - set of all subsets
A ∪ B - correct answer ✔union - combination of all elements in A and B
A ∩ B - correct answer ✔intersection - set of members in both A and B
U - correct answer ✔universal set - everything
Ā or U - A - correct answer ✔complement of set A - all members not in A
already passed 2026
∈ - correct answer ✔members of a set
∉ - correct answer ✔non member of a set
A ⊆ B - correct answer ✔subset - members in A are same in B
A ⊂ B - correct answer ✔proper subset - A is a subset of B but not equal to B
∅ or { } - correct answer ✔empty set - contains no members
|A| - correct answer ✔cardinality - number of members in a set ( no repetitiveness)
P(A) - correct answer ✔power set - set of all subsets
A ∪ B - correct answer ✔union - combination of all elements in A and B
A ∩ B - correct answer ✔intersection - set of members in both A and B
U - correct answer ✔universal set - everything
Ā or U - A - correct answer ✔complement of set A - all members not in A
