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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
0 is a symbol of
Choose an answer
singleton set
Empty set
Equivalent set
Infinite set
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Question # 2
Choose an answer
none of these
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Question # 3
The geometrical representation of a linear function is
Choose an answer
Circle
Parabola
Straight lie
None of these
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Question # 4
The set X is
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Proper Subset of X
Not A subset of X
Improper Subset of X
None of these
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Question # 5
If B⊆ A, then complement of B in A is = -----------------------
Choose an answer
A-B
A∩B
B-A
A∪B
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Question # 6
If we have a statement "if p then q" then q is called
Choose an answer
Conclusion
Implication
Unknown
Hypothesis
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Question # 7
To each element of a group there corresponds ............. inverse element
Choose an answer
Two
One
No
Three
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Question # 8
A function whose range is just one elements is called
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One-one function
Constant function
Onto function
Identity function
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Question # 9
The set of complex numbers forms
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Commutative group w.r.t addition
Commutative group w.r.t multiplication
Commutative group w.r.t division
Non commutative group w.r.t addition
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Question # 10
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 # 11
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 # 12
Power set of X i.e P(X)..........under the binary operation of union U
Choose an answer
Forms a group
Does not form a group
Has no identity element
Infinite set although X is infinite
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Question # 13
Which of the following is the subset of all sets
Choose an answer
Φ
{1,2,3}
{Φ}
{0}
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Question # 14
Additive inverse of -a -b is
Choose an answer
a
-a + b
a - b
a + b
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Question # 15
A function whose range is just one element is called
Choose an answer
One-one function
Constant function
Onto function
Identity function
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Question # 16
The set which has no proper subset is
Choose an answer
{0}
{}
{∅}
None of these
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Question # 17
Choose an answer
square root function
identity function
linear function
quadratic function
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Question # 18
A monoid (G, *) is said to be group if
Choose an answer
have identity element
is commutative
have inverse of each element
None of these
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Question # 19
The set (Q, .)
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Forms a group
Does not form a group
Contains no additive identity
Contains no additive inverse
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Question # 20
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 # 21
Choose an answer
Natural numbers
Whole numbers
Integers
Rational numbers
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