#### Set Language One Mark Questions

9th Standard

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Maths

Time : 01:00:00 Hrs
Total Marks : 25
10 x 1 = 10
1. Which of the following is correct?

(a)

{7} ∈ {1,2,3,4,5,6,7,8,9,10}

(b)

7 ∈ {1,2,3,4,5,6,7,8,9,10}

(c)

7 ∉ {1,2,3,4,5,6,7,8,9,10}

(d)

{7} $\nsubseteq$ {1,2,3,4,5,6,7,8,9,10}

2. If U ={x | x ∈ N, x < 10} and A = {x | x ∈ N, 2 ≤ x < 6} then (A′)′ is

(a)

{1, 6, 7, 8, 9}

(b)

{1, 2, 3, 4}

(c)

{2, 3, 4, 5}

(d)

{ }

3. If B – A is B, then A∩B is

(a)

A

(b)

B

(c)

U

(d)

4. If n(A) = 10 and n(B) = 15, then the minimum and maximum number of elements in A ∩ B is

(a)

(10,15)

(b)

(15,10)

(c)

(10,0)

(d)

(0,10)

5. The set does not have a proper subset is __________

(a)

Finite set

(b)

Infinite set

(c)

Null set

(d)

Singleton set

6. Sets having the same number of elements are called ___________

(a)

overlapping sets

(b)

disjoints sets

(c)

equivalent sets

(d)

equal sets

7. The set (A - B) U(B - A) is ___________

(a)

AΔB

(b)

AUB

(c)

A∩B

(d)

A'UB'

8. The set of (A U B) - (A ก B) is ____________

(a)

(AUB)'

(b)

AΔB

(c)

(A∩B)'

(d)

A'UB'

9. The set {x: x ∈ A, x ∈ B, x ∉ A ∩ B} is___________.

(a)

A ∩ B

(b)

A U B

(c)

A - B

(d)

A Δ B

10. The number of elements of the set {x : x ∈ Z, x2 = I} is ________

(a)

0

(b)

1

(c)

2

(d)

3

11. 10 x 1 = 10
12. Consider the set A = {Ashwin, Muralivijay , Vijay Shankar, Badrinath }.
Fill in the blanks with the appropriate symbol $\in$ or $\notin$.
Ashwin ______ A.

()

Ashwin $\in$ A.

13. Consider the set A = {Ashwin, Muralivijay , Vijay Shankar, Badrinath }.
Fill in the blanks with the appropriate symbol $\in$ or $\notin$.
Ganguly _____ A.

()

Ganguly $\notin$ A.

14. Consider the set A = {Ashwin, Muralivijay , Vijay Shankar, Badrinath }.
Fill in the blanks with the appropriate symbol $\in$ or $\notin$.
Tendulkar _____ A.

()

Tendulkar $\notin$ A

15. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
3$\in$ ______

()

A

16. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
4 _____ B.

()

$\in$

17. A is a proper subset of B, then A U B = ______________

()

B

18. If A ⊆ B, then A - B is __________

()

Ø

19. Sets having atleast one element in common are called ___________

()

overlapping sets

20. If n(A) = 50, n(B) = 35, n(A ⋂ B) = 5, then n(A U B) is equal to

()

80

21. If A and B are two finite sets such that n(A - B) = 30, n(A UB) = 180, then n(B) is ___________

()

150

22. 5 x 1 = 5
23. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
18 $\in$C

(a) True
(b) False
24. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
6 $\notin$A

(a) True
(b) False
25. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
14$\in$C

(a) True
(b) False
26. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
5$\in$B

(a) True
(b) False
27. Consider the following sets A = {0, 3, 5, 8}, B = {2, 4, 6, 10} and C = {12, 14,18, 20}.
0$\in$B

(a) True
(b) False