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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
If A and B are two sets then any subset R of A x B is called
Choose an answer
relation on A
relation on B
relation from A to B
relation from B to A
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Question # 2
The set {x +iy / x, y ∈ Q} forms a group under the binary operation of
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Addition
Multiplication
Division
Both addition and multiplication
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Question # 3
If n(A) = n then n(P(A)) is
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2n
n
2
n/2
2
n
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Question # 4
The set of all positive even integers is
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Not a group
A group w.r.t subtraction
A group w.r.t division
A group w.r.t multiplication
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Question # 5
If a = {2m/2m < 9 ,m€ p} , the (n A) =
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{2,3,4,5,6,7,8}
{2,4,6,8............16}
{ 4, 6}
{2,3,5,7}
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Question # 6
The number of subset of {0} is
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1
2
3
None
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Question # 7
Two sets A and B are said to be disjoint if
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Question # 8
The set {x|x∈N∧x-4=0} in tabular form is
Choose an answer
{-4}
{0}
{}
None of these
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Question # 9
P∉ A means
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P
is subset of A
P
is an element of A
P does not belongs to A
A does not element of
P
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Question # 10
Choose an answer
a-b=ab
ab=a
a+b=ab
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Question # 11
If A⊆ B, and B is a finite set, then
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n (a) < n(B)
n(B)<(A)
n(A)≤ n (B)
n(A)≥ n(B)
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Question # 12
A conditional "if p then q" is denoted by
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Question # 13
Group of none-singular matrices under multiplication is
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None-Abelian group
Semi group
Abelian group
None of these
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Question # 14
The set Q
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Forms a group under addition
Does not form a group
Contains no additive indentity
Contains no additive inverse
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Question # 15
If B-A≠φ , then n(B-A) is equal to
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n(a)+n(c)
n(c)-n(a)
n(a)-n(c)
None of these
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Question # 16
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1/x
-x
2x
0.5 x
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Question # 17
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Question # 18
The set of natural numbers is a subset of
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{1, 2, 3, .... 100}
The set of whole numbers
{2, 4, 6, 8, .....}
None of these
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Question # 19
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An empty set
Universal set
A singleton set
None of these
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Question # 20
The graph of a quadratic function is
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Circle
Ellipse
Parabola
Hexagon
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Question # 21
The extraction of cube root of a given number is a
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Unary Operation
Binary Operation
Relation
None of these
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