EduSahara™ Worksheet

Question 1

1.

Find the cardinality of A = {3,-6,8,0,7}

(i)

2
(ii)

4
(iii)

8
(iv)

5
(v)

6

Question 2

2.

If A = {-6,9,2,4,5,0,7,1}, then n(A) = ?

(i)

10
(ii)

8
(iii)

7
(iv)

6
(v)

9

Question 3

3.

Which of the following is a singleton set?

(i)

{4}
(ii)

{1,-1,-9,2}
(iii)

{-6,0,-1,5,9}
(iv)

{7,4,5}
(v)

{7,3}

Question 4

4.

Which of the following is a null set?

(i)

{}
(ii)

{-7,-4,3,-6}
(iii)

{4,2,1}
(iv)

{-1,2}
(v)

{4,9,2,8,1}

Question 5

5.

Which of the following is an infinite set?

(i)

{-9,-6}
(ii)

{5}
(iii)

{0,5,1}
(iv)

{}
(v)

{0,1,2,3,...}

Question 6

6.

Which of the following elements belong to the set {6,3,4,10,2}?

(i)

(-1)
(ii)

10
(iii)

15
(iv)

(-2)
(v)

14

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 {10,2,7,6,9}?

(i)

5
(ii)

2
(iii)

7
(iv)

6
(v)

10

Question 13

13.

Which of the following elements does not belong to the set {s,l,k,f,u}

(i)

f
(ii)

l
(iii)

s
(iv)

n
(v)

k

Question 14

14.

Which of the following is an empty set?

(i)

{empty}
(ii)

{0}
(iii)

{o}
(iv)

{∅}
(v)

{}

Question 15

15.

Which of the following is a null set?

(i)

{0}
(ii)

{∅}
(iii)

{empty}
(iv)

∅
(v)

{o}

Question 16

16.

Which of the following are null sets?

a)

∅

b)

{6,1,8}

c)

{}

d)

{∅}

e)

{empty}

(i)

{e,b,a}
(ii)

{a,c}
(iii)

{d,c}
(iv)

{b,a}
(v)

{d,c,a}

Question 17

17.

Which of the following sets have same cardinality?

a)

{-5,3,9,-9,-6,-7}

b)

{4,2,-2,6,-3,-7,3,-8,7}

c)

{-9,9,2,-2,-4,4,-5,-1}

d)

{-3,7,3,-4,-7,-5,1}

e)

{9,2,6,-9,-5,5,-1}

(i)

{a,d}
(ii)

{b,e,d}
(iii)

{b,e}
(iv)

{d,e}
(v)

{c,a,d}

Question 18

18.

What is the cardinality of an empty set?

(i)

2
(ii)

7
(iii)

0
(iv)

5
(v)

3

Question 19

19.

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

(i)

Q'
(ii)

R
(iii)

W
(iv)

N
(v)

Z

Question 20

20.

Which of the following symbols represent the set of Integers ?

(i)

N
(ii)

Z
(iii)

Q'
(iv)

Q
(v)

R

Question 21

21.

Which of the following are disjoint sets?

(i)
{}

,

{20,5,3,14,17,8}
(ii)
{20,5,3,14,17,8}

,

{18,15,4,9,11,8}
(iii)
{20,5,3,14,17,8}

,

{20,5,3,14,17,8}
(iv)
{20,5,3,14,17,8}

,

{}
(v)
{20,5,3,14,17}

,

{18,15,4,9,11}

Question 22

22.

Which of the following are overlapping sets?

(i)
{11,17}

,

{8,5,14,3,13}
(ii)
{11,14,3,13,17}

,

{8,5,14,3,13}
(iii)
{11,14,3,13,17}

,

{8,5}
(iv)
{11,14,3,13,17}

,

{}
(v)
{11,17}

,

{8,5}

Assignment Key