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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
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 # 2
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None of these
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Question # 3
The negation of given number is a
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Binary operation
Unary operation
Relation
None of these
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Question # 4
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Question # 5
A = B if
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A is equivalent to B
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Question # 6
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None of these
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Question # 7
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An empty set
Universal set
A singleton set
None of these
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Question # 8
If E = { } , then P(E)
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∅
{ }
{(2),(4),(6)....}
(∅)
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Question # 9
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A
B
A'B'
B'A
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Question # 10
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square root function
identity function
linear function
quadratic function
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Question # 11
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Question # 12
Which conjunction is not true ?
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Question # 13
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Question # 14
The sets {1, 2, 4} and {4, 6, 8, 10} are
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Equal sets
Equivalent sets
Disjoint sets
Over lapping sets
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Question # 15
Which of the following is the subset of all sets?
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Question # 16
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 # 17
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 # 18
If p and q are two statements then their conjunction is denoted by
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Question # 19
The set of whole numbers is subset of
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The set on integers
The set of natural numbers
{1, 3, 5, 7, ....}
The set of prime numbers
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Question # 20
Multiplicative inverse of 0 is
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0
1
+-1
Does not exist
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Question # 21
(A∩Bc)c= -------------------------
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Ac∪Bc
Ac∪B
Ac∩B
None of these
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