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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
Which of the following sets is finite
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The set of natural numbers between 3 and 10
The set of rational numbers between 3 and 10
The set of real numbers between 0 and 1
The set of rational numbers between 0 and 1
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Question # 2
If B⊆ A, then complement of B in A is = -----------------------
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A-B
A∩B
B-A
A∪B
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Question # 3
Let A and B be two sets. If every element of A is also an element of B then
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Question # 4
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Question # 5
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Addition
Multiplication
Division
Both addition and multiplication
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Question # 6
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none of these
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Question # 7
A function in which the second elements of the order pairs are distinct is called
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Onto function
One-one function
Identity function
Inverse function
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Question # 8
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 # 9
For any two sets A and, A ⊆ B if
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x ∈ A ⇒ x ∈ B
x ∉ A ⇒ x ∉ B
x ∈ A ⇒ x ∉ B
None of these
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Question # 10
The total number of subsets that can be formed out of the set {a, b, c} is
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1
4
8
12
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Question # 11
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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