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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
What is the number of elements of the power set of {0, 1}
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1
2
3
4
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Question # 2
The statement that a group can have more than one identity elements is
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True
False
Ambiguous
Some times true
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Question # 3
The many subset can be formed from the set {a,b,c,d}
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8
4
12
16
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Question # 4
Under multiplication, solution set of is
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Groupoid
Abelian group
Semi group
All of these
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Question # 5
For any set B,B∪B' is
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Is set B
Set B'
Universal set
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Question # 6
The statement that a group can have more than one identity elements is
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True
False
Fallacious
Some times true
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Question # 7
Z is the set of integers, (z, *) is a group with a * b = a + b + 1, a, b
∈
G. then inverse of a is
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-a
a + 1
-2 -a
None of these
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Question # 8
The set of integer is
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Finite group
A group w.r.t addition
A group w.r.t multiplication
Not a group
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Question # 9
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3
1
2
4
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Question # 10
If p and q are two statements then their biconditional 'p if q' is denoted by
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Question # 11
{0} is a
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Empty set
Singleton set
Zero set
Null Set
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Question # 12
Which of the following sets in infinite
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The set of students of your class
The set of all schools in Pakistan
The set of natural numbers between 3 and 10
The set of rational numbers between 3 and 10
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Question # 13
Write down the power set of {9, 11}
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Question # 14
If f:A→B is an injective function and second elements of no two of its ordered pairs are equal, then f is called
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1-1 and onto
Bijective
1-1 and into
None of these
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Question # 15
If there is one-one correspondence between A and B, then we write.
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A = B
A⊆ B
A⊇ B
A ∼ B
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Question # 16
The set of even prime numbers is
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(2,4,6,8,10}
{2,4,6,8,10,12}
{1,3,5,7,9}
{2}
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Question # 17
Which of the following is the subset of all sets
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Φ
{1,2,3}
{Φ}
{0}
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Question # 18
The set of months in a year beginning with S.
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{September, October, November}
Singleton set
Null set
Empty set
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Question # 19
Choose an answer
Addition
Multiplication
Division
Both addition and multiplication
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Question # 20
If E = { } , then P(E)
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∅
{ }
{(2),(4),(6)....}
(∅)
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