EduSahara™ Worksheet

Question 1

1.

Find the cardinality of A = {7,5,6,3,-3,4,-7,-1,-9}

(i)

10
(ii)

11
(iii)

7
(iv)

9
(v)

8

Question 2

2.

If A = {5,-8,-1,-7,3}, then n(A) = ?

(i)

4
(ii)

8
(iii)

2
(iv)

6
(v)

5

Question 3

3.

Which of the following is a singleton set?

(i)

{-4,0,-7}
(ii)

{7,0}
(iii)

{1}
(iv)

{3,1,-8,-3,9}
(v)

{-1,-9,-7,-3}

Question 4

4.

Which of the following is a null set?

(i)

{}
(ii)

{-1,-6,6}
(iii)

{7,1,-4,-5,5}
(iv)

{-6,5,8,0}
(v)

{-4,1}

Question 5

5.

Which of the following is an infinite set?

(i)

{-1,-5}
(ii)

{-8,5,-5}
(iii)

{0,1,2,3,4,...}
(iv)

{5}
(v)

{}

Question 6

6.

Which of the following elements belong to the set {2,9,8,4,7}?

(i)

14
(ii)

(-1)
(iii)

15
(iv)

0
(v)

2

Question 7

7.

Which of the following is 'union' symbol?

(i)

⊄
(ii)

∈
(iii)

∪
(iv)

∉
(v)

∩

Question 8

8.

Which of the following is 'intersection' symbol?

(i)

⊂
(ii)

⊆
(iii)

⊄
(iv)

∈
(v)

∩

Question 9

9.

Which of the following is 'belongs to' symbol?

(i)

∈
(ii)

↔
(iii)

⊇
(iv)

⊂
(v)

∩

Question 10

10.

Which of the following is 'does not belongs to' symbol?

(i)

⊇
(ii)

⊆
(iii)

⊄
(iv)

∩
(v)

∉

Question 11

11.

Which of the following is 'null set' symbol?

(i)

⊅
(ii)

⊄
(iii)

∅
(iv)

∈
(v)

⊂

Question 12

12.

Which of the following elements does not belong to the set {4,10,5,3,9}?

(i)

10
(ii)

4
(iii)

5
(iv)

7
(v)

9

Question 13

13.

Which of the following elements does not belong to the set {b,k,u,p,q}

(i)

l
(ii)

b
(iii)

k
(iv)

u
(v)

p

Question 14

14.

Which of the following is an empty set?

(i)

{o}
(ii)

{∅}
(iii)

{0}
(iv)

{empty}
(v)

{}

Question 15

15.

Which of the following is a null set?

(i)

∅
(ii)

{empty}
(iii)

{∅}
(iv)

{0}
(v)

{o}

Question 16

16.

Which of the following are null sets?

a)

{}

b)

{2,6,8}

c)

{∅}

d)

{empty}

e)

∅

(i)

{b,a}
(ii)

{d,b,a}
(iii)

{c,e,a}
(iv)

{c,e}
(v)

{a,e}

Question 17

17.

Which of the following sets have same cardinality?

a)

{8,-3,2,-7}

b)

{-3,7,8,-2}

c)

{-9,-2,5,4,-6,6}

d)

{3,-2,-3}

e)

{1,7,-8,-3,8}

(i)

{d,b,a}
(ii)

{d,b}
(iii)

{e,c,a}
(iv)

{c,a}
(v)

{a,b}

Question 18

18.

What is the cardinality of an empty set?

(i)

5
(ii)

0
(iii)

6
(iv)

3
(v)

1

Question 19

19.

Which of the following symbols represent the set of Whole numbers ?

(i)

W
(ii)

R
(iii)

Q
(iv)

N
(v)

Q'

Question 20

20.

Which of the following symbols represent the set of Integers ?

(i)

Q
(ii)

W
(iii)

N
(iv)

Z
(v)

R

Question 21

21.

Which of the following are disjoint sets?

(i)
{}

,

{14,4,15,1,9,7}
(ii)
{14,4,15,1,9,7}

,

{7,6,12,14,10}
(iii)
{14,4,15,1,9,7}

,

{}
(iv)
{14,4,15,1,9,7}

,

{14,4,15,1,9,7}
(v)
{4,15,1,9}

,

{7,6,12,10}

Question 22

22.

Which of the following are overlapping sets?

(i)
{15,17,11,2,10}

,

{4,5,13,17,1,2,15}
(ii)
{15,17,11,2,10}

,

{4,5,13,1}
(iii)
{11,10}

,

{4,5,13,17,1,2,15}
(iv)
{15,17,11,2,10}

,

{}
(v)
{11,10}

,

{4,5,13,1}

Assignment Key