Set Symbol Quiz

What does the symbol "∈" represent in set theory?

• Subset

• Belongs to

• Intersection

• Union

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

• {1, 2, 3, 4}

• {2, 3}

• {1, 4}

• {1, 3, 4}

Which symbol represents the union of two sets?

• ∩

• ⊆

• ∪

• '

What does the symbol "⊆" signify in set theory?

• Intersection

• Subset

• Union

If ( U = {1,2,3,4,5} ) and ( A = {1,2} ), what is the complement of ( A ) ( A' )?

• {1, 2}

• {3, 4, 5}

• {2, 3, 4}

• {1, 5}

What is the result of {1,2,3} ∪ {3,4,5}?

• {1, 2}

• {1, 5}

• {1, 2, 3, 4, 5}

• {3}

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

• {1, 2}

• {3}

• {4, 5}

• {1, 2, 4, 5}

Which symbol denotes the intersection of two sets?

• ∪

• ∩

• ∖

• ⊆

In set builder notation, how would you represent the set of all even numbers less than 10?

• {x | x<10}

• {x | x is even}

• {x | x is even and x<10}

• {x | x≥10}

If A={x | x is a prime number less than 10}, what is the set A?

• {2, 3, 5, 7}

• {1, 2, 3, 5, 7}

• {2, 3, 4, 5, 7}

• {1, 2, 3, 4, 5, 7}