Match each set-theory symbol to its meaning.

Exercise and reference answers

Matching pairs

1. A

   A ∪ B

   B

   Union: every element in A or B

2. A

   A ∩ B

   B

   Intersection: elements in both A and B

3. A

   A ⊂ B

   B

   A is a (proper) subset of B

4. A

   x ∈ A

   B

   x is an element of A

Instructions

Pair the symbol with its meaning.

Explanation