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Math 11 Chapter 2
Sets, Functions and Groups
Test - 1
1.
Cancellation laws do not hold in a group.
a) False
b) True
2.
For any two sets. A&B if A
Í
B & B
Í
A, then
a) A=B
b) A-B
c) A@B
d) A!B
3.
Which of the following sets possesses the identity element w.r.t addition?
a) Rational Numbers.
b) Natural numbers.
c) Set of prime numbers.
d) Set of odd numbers.
4.
If A and B are any disjoint sets.
a) U(A-B)= n(A) - n(B)
b) U(A-B)= U(A) - U(B)
c) n(A-B)= n(A) - n(B)
d) n(A-B)= U(A) - n(B)
5.
If intersection between two sets in an Empty set, then they are called.
a) Overlapping sets
b) Intersecting sets
c) Disjoint sets.
d) Common sets
6.
A set may be described by ________________ its elements with in brackets.
a) Adding
b) Cancelling
c) Counting
d) Listing
7.
If U= A then A
c
=________________.
a) A.
b) None of these.
c) U.
8.
Both the components being false, the composite proposition is false.
a) True
b) False
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