Sets – Concepts, Notation & Types of Sets

Grade 11 Maths — Sets – Concepts, Notation & Types of Sets: 25 practice questions with instant scoring and explanations.

1. Which of the following is a well-defined set?
2. The set of natural numbers is denoted by:
3. Write the set {1, 4, 9, 16, 25} in set-builder notation.
4. The set {x : x ∈ R, x² = -1} is:
5. How many elements does the set {2, 3, 5, 7, 11} have?
6. Which set is a subset of {1, 2, 3, 4}?
7. The set of whole numbers is denoted by:
8. A set with exactly one element is called:
9. The cardinality of the set {x : x² - 5x + 6 = 0, x ∈ R} is:
10. Which of the following is a finite set?
11. The set of integers is denoted by:
12. Two sets A and B are equal if:
13. {a, b, c} is a subset of which set?
14. The number of subsets of a set with 3 elements is:
15. Which of the following best describes the set {π, e, √2}?
16. The set of real numbers is denoted by:
17. Is {0} an empty set?
18. Convert the set-builder form {x : x = 2n, n ∈ N, n ≤ 4} to roster form:
19. Which set is equivalent to {vowels in English alphabet}?
20. A set that contains all sets under consideration is called:
21. The power set of {1, 2} is:
22. How many proper subsets does {a, b, c} have?
23. The set {x : x ∈ N, 2 < x < 3} is:
24. If A = {1, 2, 3} and B = {2, 3, 4}, then A = B is:
25. The symbol ∈ means: