EduSahara™ Worksheet

Question 1

1.

Find the cardinality of A = {0,4,-5,3,6}

(i)

5
(ii)

2
(iii)

8
(iv)

4
(v)

6

Question 2

2.

If A = {3,-5,-3,6,-7,-2,1}, then n(A) = ?

(i)

5
(ii)

6
(iii)

8
(iv)

7
(v)

9

Question 3

3.

Which of the following is a singleton set?

(i)

{-1,-8,-4,-3,8}
(ii)

{7,-5,-9}
(iii)

{-6}
(iv)

{-3,8,9,6}
(v)

{-2,9}

Question 4

4.

Which of the following is a null set?

(i)

{-6,-7,8,-3}
(ii)

{-9,-3,-8}
(iii)

{}
(iv)

{-4,2,5,1,-2}
(v)

{6,-9}

Question 5

5.

Which of the following is an infinite set?

(i)

{2,-2,-9}
(ii)

{0,1,2,3,4,5,6,7,8,...}
(iii)

{-2,6}
(iv)

{}
(v)

{7}

Question 6

6.

Which of the following elements belong to the set {10,8,7,5,1}?

(i)

(-1)
(ii)

14
(iii)

13
(iv)

0
(v)

10

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 {10,1,9,8,5}?

(i)

5
(ii)

10
(iii)

2
(iv)

9
(v)

8

Question 13

13.

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

(i)

o
(ii)

s
(iii)

d
(iv)

f
(v)

u

Question 14

14.

Which of the following is an empty set?

(i)

{empty}
(ii)

{}
(iii)

{o}
(iv)

{∅}
(v)

{0}

Question 15

15.

Which of the following is a null set?

(i)

{o}
(ii)

∅
(iii)

{empty}
(iv)

{0}
(v)

{∅}

Question 16

16.

Which of the following are null sets?

a)

∅

b)

{}

c)

{∅}

d)

{empty}

e)

{2,7,3}

(i)

{e,c,a}
(ii)

{a,b}
(iii)

{d,b,a}
(iv)

{c,a}
(v)

{d,b}

Question 17

17.

Which of the following sets have same cardinality?

a)

{-7,3,-5,7,0,6}

b)

{1,4,7,-1,0,-8,5,-7,-2}

c)

{9,2,-2,-1,-8,-3,-7}

d)

{3,8,-4,5,-1,4,9}

e)

{1,9,0,2,-1,-3,-5,-9}

(i)

{e,a,c}
(ii)

{b,d}
(iii)

{a,c}
(iv)

{b,d,c}
(v)

{c,d}

Question 18

18.

What is the cardinality of an empty set?

(i)

3
(ii)

4
(iii)

6
(iv)

8
(v)

0

Question 19

19.

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

(i)

R
(ii)

Q
(iii)

Q'
(iv)

Z
(v)

W

Question 20

20.

Which of the following symbols represent the set of Integers ?

(i)

Q'
(ii)

Z
(iii)

Q
(iv)

R
(v)

N

Question 21

21.

Which of the following are disjoint sets?

(i)
{14,16,2,13,7,6}

,

{}
(ii)
{14,16,2,13,7,6}

,

{20,13,6,5,4}
(iii)
{14,16,2,13,7,6}

,

{14,16,2,13,7,6}
(iv)
{}

,

{14,16,2,13,7,6}
(v)
{14,16,2,7}

,

{20,6,5,4}

Question 22

22.

Which of the following are overlapping sets?

(i)
{20,9,3,17,1,12,7}

,

{}
(ii)
{20,9,3,17,1,12,7}

,

{4,13,16,17,7,12}
(iii)
{20,9,3,1}

,

{4,13,16}
(iv)
{20,9,3,17,1,12,7}

,

{4,13,16}
(v)
{20,9,3,1}

,

{4,13,16,17,7,12}

Assignment Key