EduSahara™ Worksheet

Question 1

1.

A ∩ B
=

(i)

{-3,-9}
(ii)

{4,-9}
(iii)

{12,-9}
(iv)

{6,4,-9}
(v)

{-9}

Question 2

2.

In a class of 16 students, each one studies either 'Sanskrit' or 'Physics' or both. If 9 students study 'Sanskrit' and 10 students study 'Physics', how many study 'Physics' only?

(i)

7
(ii)

6
(iii)

9
(iv)

8
(v)

4

Question 3

3.

Find ( (A − B) ∪ (B − A) )'

(i)

{}
(ii)

{4,-4,0,8,1,-5,-1,6,-6}
(iii)

{-4,0,-5,-9,-1,6,8,1,-6}
(iv)

{4,-5,0,-6,6,-1,8,1,-4,-9}
(v)

{-5,6,8,4,1,-1,-6,-4,-9}

Question 4

4.

Find n(A ∩ ∅)

(i)

(-2)
(ii)

1
(iii)

2
(iv)

(-1)
(v)

0

Question 5

5.

In a class of 31 students, if 15 students like 'badminton', 28 students like 'kabaddi' and 13 students like both the games, how many like 'badminton' only ?

(i)

1
(ii)

0
(iii)

3
(iv)

4
(v)

2

Question 6

6.

Find n(A ∪ A)

(i)

5
(ii)

4
(iii)

8
(iv)

6
(v)

7

Question 7

7.

Find (A ∩ B)'

(i)

{}
(ii)

{-4,-5,1,-9,-1,-6}
(iii)

{-9,-1,-4,1,-6,-5,-2}
(iv)

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

Question 8

8.

In a class of 25 students, if 18 students study 'English', 15 students study 'French' and 10 students study both the subjects, how many do not study any of the subjects ?

(i)

4
(ii)

2
(iii)

3
(iv)

(-1)
(v)

1

Question 9

9.

In a class of 25 students, if 17 students read 'Deccan Chronicle', 21 students read 'Hans India' and 15 students read both the news papers, how many do not read any of the news papers ?

(i)

1
(ii)

3
(iii)

4
(iv)

2
(v)

0

Question 10

10.

Find n((A − B) ∪ (B − A))

(i)

3
(ii)

6
(iii)

8
(iv)

4
(v)

5

Question 11

11.

In a class of 27 students, each one reads either 'Hans India' or 'Times of India' or both. If 27 students read 'Hans India' and 21 students read 'Times of India', how many read 'Hans India' only?

(i)

7
(ii)

5
(iii)

9
(iv)

4
(v)

6

Question 12

12.

Find (A − B) ∪ (B − A)

(i)

{-8,-6,1,2,8}
(ii)

{-8,1,-6,2}
(iii)

{-8,1,-6,4,8}
(iv)

{-8,2,1,8}
(v)

{0,8,2,-6,-8,1}

Question 13

13.

In a class of 32 students, if 19 students prefer 'Bicycle', 32 students prefer 'Car' and 19 students prefer both the modes of transport, how many do not prefer any of the modes of transport ?

(i)

(-3)
(ii)

(-1)
(iii)

0
(iv)

2
(v)

1

Question 14

14.

Find n(A ∩ A')

(i)

3
(ii)

1
(iii)

(-3)
(iv)

0
(v)

(-1)

Question 15

15.

In a class of 26 students, each one prefers either 'Moped' or 'Car' or both. If 18 students prefer 'Moped' and 26 students prefer 'Car', how many prefer 'Car' only?

(i)

6
(ii)

8
(iii)

7
(iv)

9
(v)

10

Question 16

16.

Find n(B)

(i)

5
(ii)

8
(iii)

6
(iv)

4
(v)

7

Question 17

17.

In a class of 27 students, each one reads either 'Times of India' or 'Indian Express' or both. If 27 students read 'Times of India' and 14 students read 'Indian Express', how many read both the news papers?

(i)

16
(ii)

14
(iii)

13
(iv)

15
(v)

12

Question 18

18.

Find μ

(i)

{-8,-3,8,0,-4,-9,7,4,-6,1}
(ii)

{8,-4,-9,4,-1,-2,10,-8,-6,3,0}
(iii)

{4,-4,-8,-6,0,10,8,-9,-3}
(iv)

{-6,-3,8,-9,7,0,4,-8,-4}
(v)

{-2,-6,0,10,-4,8,-8,-9,4}

Question 19

19.

Find A ∪ A'

(i)

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

{-14,-7,-8,-1,-2,5}
(iii)

{3,-3,-7,-9}
(iv)

{-7,-2,-8,-14}
(v)

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

Question 20

20.

In a class of 23 students, each one prefers either 'By Foot' or 'School Van' or both. If 22 students prefer 'By Foot' and 20 students prefer 'School Van', how many prefer 'By Foot' only?

(i)

2
(ii)

6
(iii)

4
(iv)

3
(v)

0

Question 21

21.

Find n(A ∩ A)

(i)

2
(ii)

4
(iii)

7
(iv)

3
(v)

5

Question 22

22.

Find n(A')

(i)

1
(ii)

4
(iii)

5
(iv)

3
(v)

2

Question 23

23.

Find n(B − A)

(i)

5
(ii)

4
(iii)

1
(iv)

7
(v)

3

Question 24

24.

In a class of 34 students, if 21 students prefer 'School Bus', 29 students prefer 'Auto' and 18 students prefer both the modes of transport, how many prefer 'School Bus' only ?

(i)

3
(ii)

5
(iii)

2
(iv)

0
(v)

4

Question 25

25.

Find B'

(i)

{}
(ii)

{7,3,-4,-2}
(iii)

{7,8,-2,-4,3}
(iv)

{7,8,-2,3}

Assignment Key