Exploring Set Notation

What does the symbol ∈ represent in set theory?

• The symbol ∈ represents membership in set theory.

• The symbol ∈ denotes the complement of a set.

• The symbol ∈ indicates the intersection of sets.

• The symbol ∈ represents the union of sets.

If A = {1, 2, 3} and B = {2, 3, 4}, what is A ∩ B?

• {1, 2, 3, 4}

• {2, 3}

• {2, 3, 4}

• {1, 4}

How would you denote the empty set?

• ∅

• {}

• null

• []

What does the symbol ⊆ mean?

• Intersection

• Superset

• Subset

• Union

If A = {x | x is an even number}, what is an example of an element in A?

• 7

• 5

• 3

• 2

What is the union of sets A and B denoted as?

• A & B

• A ∪ B

• A + B

• A - B

If A = {1, 2, 3} and B = {3, 4, 5}, what is A ∪ B?

• {1, 2, 3}

• {3, 4}

• {1, 2, 5}

• {1, 2, 3, 4, 5}

What does the notation A - B represent?

• Intersection of sets A and B.

• Set difference between A and B.

• Complement of set A with respect to B.

• Union of sets A and B.

If C = {x | x is a prime number}, what is C ∩ {2, 3, 4, 5}?

• {2, 4}

• {2, 3, 5}

• {3, 4, 5}

• {4, 5}

How do you denote the power set of a set A?

• P(A) or 2^A

• A^2

• P(A) + A

• S(A)