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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
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Question # 2
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1
12
5
29
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Question # 3
If A is a set then any subset R of A x A is called
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relation on A
relation on B
relation from A to B
relation from B to A
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Question # 4
Which of the following is the definition of singleton
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The objects in a set
A set having no element
A set having no subset
None of these
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Question # 5
The multiplicative inverse of x such that x = 0 is
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-x
does not exist
1/x
0
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Question # 6
If T = {2,4,6,8,10,12}, then
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T = (First six natural numbers)
T = (First six odd numbers)
T = (First six real numbers)
T = ( First six even numbers)
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Question # 7
The set (Z, +) forms a group
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Forms a group w.r.t. addition
Non commutative group w.r.t. multiplication
Forms a group w.r.t multiplication
Doesn't form a group
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Question # 8
The set { {a, b} } is
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Infinite set
Singleton set
Two points set
Empty set
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Question # 9
{1, 2, 3} is _____
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an infinite set
A finite set
A singleton set
Universal set
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Question # 10
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Question # 11
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A
B
A'
None of these
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Question # 12
G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are
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2, 2, 2
3, 3, 3
2, 2, 4
2, 3, 4
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Question # 13
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A
B
U
None of these
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Question # 14
Let A,B and C be any sets such that A∪B = A∪C and A∩ B = A∩ C then
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A = B
B = C
A≠ C
A ≠ B
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Question # 15
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 # 16
If p and q are two statements then their biconditional 'p if q' is denoted by
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Question # 17
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Question # 18
If A = {2m/m
3
= 8 , m€ Z} then A =
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{1,8,27}
{4}
(2,4,6}
{2,16,54}
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Question # 19
The graph of a quadratic function is
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Circle
Ellipse
Parabola
Hexagon
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Question # 20
The identity element of a set X with respect to intersection in P(x) is
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X
Does not exist
∅
None of these
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Question # 21
For any set B, BUB' is
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Is set B
Set B'
Universal set
None of these
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