Page 22 - Math 7

Set

EXERCISE 1.3
General Section - Classwork

1. Let's say and write the members of the following set operations.

U = {a, b, c, d, e} A = {a, b, c}, and B = { b, c, d}

(i) A ‰ B = ............................. (ii) A ˆ B = .............................

(iii) A – B = .............................. (iv) B – A = ..............................

(v) A = .................................. (vi) B = ....................................

(vii) A ‰ B = ............................. (viii) A ˆ B = .............................
2. Let's say and write the required set operations represented by the shaded
regions of Venn-diagrams.
a) b) c) d)
U U U U
A B P Q X Y A B

.......................... .......................... .......................... ..........................

3. Let’s identify and shade the region to show the given operations.
(i) (ii) (iii) (iv)
U U U U
A B P Q M N X Y

A ˆ B P – Q M ‰ N Y – X
Creative Section - A
4. S is the set of students in sport-club and C is the set of students in
cultural club of a school. If S = {Ram, Sita, Krishna, Shiva, Abdul} and
C = {Sita, Laxmi, Shova, Hari, Joseph}, answer the following questions:

a) Make a separate set of students who are in both the clubs.
b) Make a separate set of students at the time of their joint meeting and
write the number of members in the joint meeting.

c) Make a set of students who are only the member of Sport-club.
d) Make a set of students who are only the member of Cultural-club.

Vedanta Excel in Mathematics - Book 7 20 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur