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ECAT Mathematics Chapter 23 MCQs With Answers
Question # 1
Choose an answer
A
B
U
None of these
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Question # 2
Two sets A and B are said to be disjoint if
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Question # 3
Power set of X i.e P(X)..........under the binary operation of union U
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Forms a group
Does not form a group
Has no identity element
Infinite set although X is infinite
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Question # 4
If p and q are two statements then their conjunction is denoted by
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Question # 5
The number of proper subset of A ={a.b.c.d} is
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3
6
8
15
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Question # 6
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-x
Infinite set
{-4, 4}
None of these
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Question # 7
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Question # 8
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Question # 9
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Biconditional
Implication
Antecedent
Hypothesis
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Question # 10
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 # 11
The graph of a quadratic function is
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Circle
Ellipse
Parabola
Hexagon
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Question # 12
Power set of X i.e P(X) _______ under the binary operation of union U
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Forms a group
Does not form a group
Has no identity element
Infinite set although X is infinite
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Question # 13
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Question # 14
The contra positive of p → q is
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q → p
~q→~q
~p→~q
None of these
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Question # 15
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Singleton set
A set with two points
Empty set
None of these
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Question # 16
Multiplicative inverse of "1" is
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0
-1
1
{0, 1}
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Question # 17
The multiplicative inverse of -1 in the set {1-,1} is
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1
-1
±1
0
Does not exist
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Question # 18
Which of the following is the subset of all sets
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Φ
{1,2,3}
{Φ}
{0}
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Question # 19
If we have a statement "if p then q" then q is called
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Conclusion
Implication
Unknown
Hypothesis
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Question # 20
Choose an answer
A = B
B = C
A = C
None of these
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Question # 21
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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