ICSE Class 6 Mathematics - Sets - Test 1 (Basic)
1. What is a set?
A. A collection of unclear ideas
B. A collection of well-defined objects
C. A collection of only numbers
2. The objects in a set are called:
A. Elements
B. Points
C. Lines
3. Which of the following is a well-defined set?
A. Beautiful flowers
B. Good students
C. Vowels in the English alphabet
4. Write the set of first three natural numbers in roster form.
A. (1, 2, 3)
B. {1, 2, 3}
C. [1, 2, 3]
5. How many elements are there in the set {a, e, i, o, u}?
A. 5
B. 4
C. 6
6. Which symbol represents an empty set?
A. {0}
B. {1}
C. {}
7. A set having exactly one element is called:
A. Empty set
B. Singleton set
C. Infinite set
8. Is 4 an element of the set {2, 4, 6, 8}?
A. Yes
B. No
C. Cannot say
9. Which of the following is a finite set?
A. Natural numbers
B. Counting numbers
C. Days of a week
10. Which of the following is an infinite set?
A. Months of a year
B. Natural numbers
C. Letters in the word CAT
11. Which set is equal to {1, 2, 3}?
A. {3, 2, 1}
B. {1, 2}
C. {1, 2, 4}
12. Which is the set of even numbers less than 10?
A. {1, 3, 5, 7, 9}
B. {2, 4, 6, 8, 10}
C. {2, 4, 6, 8}
13. What is the cardinal number of the set {red, blue, green}?
A. 2
B. 3
C. 4
14. If A = {1, 3, 5}, which statement is correct?
A. 2 is not an element of A
B. 2 is an element of A
C. A has 4 elements
15. What is the set of letters in the word MOON?
A. {M, O, O, N}
B. {M, N}
C. {M, O, N}
16. Which of the following is an empty set?
A. Set of months with 31 days
B. Set of months with 32 days
C. Set of days in a week
17. Which is the set of factors of 6?
A. {1, 2, 3, 6}
B. {2, 4, 6}
C. {1, 3, 5}
18. Which is the set of prime numbers less than 10?
A. {1, 2, 3, 5}
B. {2, 4, 6, 8}
C. {2, 3, 5, 7}
19. Which of the following is a subset of {2, 4, 6}?
A. {2, 5}
B. {2, 4}
C. {1, 6}
20. A diagram used to show sets is called:
A. Venn diagram
B. Bar graph
C. Number line