Sets Quiz

Which of the following sets is finite?

• Set of natural numbers

• Set of stars in the sky

• Set of vowels in the English alphabet

• Set of points in a line

Which set is infinite?

• {2, 4, 6, 8, 10}

• {cat, dog, bird}

• {1, 3, 5, 7, …}

• {A, E, I, O, U}

A = {1, 2, 3}, B = {3, 2, 1}. What kind of sets are A and B?

• Equivalent sets

• Equal sets

• Disjoint sets

• Infinite sets

A = {a, b, c}, B = {x, y, z}. What kind of sets are these?

• Equal

• Joint

• Equivalent

• Disjoint

Which of the following pairs are disjoint sets?

• {1, 2, 3} and {3, 4, 5}

• {a, b} and {b, c}

• {x, y} and {a, b}

• {cat, dog} and {dog, bird}

If A = {2, 4, 6}, and B = {4, 5, 6}, what is A ∩ B?

• {2, 4, 5, 6}

• {4, 6}

• {2, 5}

• {2}

What is A ∪ B if A = {1, 3} and B = {3, 5}?

• {1, 3, 5}

• {1, 5}

• {3}

• {1, 3}

What is A − B if A = {1, 2, 3, 4} and B = {3, 4, 5}?

• {3, 4}

• {1, 2}

• {5}

• {1, 2, 5}

In a universal set U = {1, 2, 3, 4, 5, 6}, and A = {2, 4, 6}, what is A′?

• {1, 3, 5}

• {2, 4, 6}

• {1, 2, 3}

• {3, 5, 6}

What operation is represented by the shaded part only in A but not in B in a Venn Diagram?

• A ∪ B

• A ∩ B

• A − B

• B − A