Discrete Mathematics MCQs | Page - 3
Dear candidates you will find MCQ questions of Discrete Mathematics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. If A is the set of students who play crocket, B is the set of students who play football then the set of students who play either football or cricket, but not both, can be symbolically depicted as the set
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Correct Answer: (A)
a ⊕ b
Q. Let A and B be two sets in the same universal set. Then A – B =
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Correct Answer: (C)
a ๏ b๏ข
Q. R is a relation defined in Z by aRb if and only if ab ³ 0, then R is
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Correct Answer: (D)
equivalence
Q. Let a relation R in the set R of real numbers be defined as (a, b) Î R if and only if 1 + ab > 0 for all a, bÎR. The relation R is
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Correct Answer: (A)
reflexive and symmetric
Q. If R be relation ‘<‘ from A = {1, 2, 3, 4} to B = {1, 3, 5} ie, (a, b) Î R iff a < b, then RoR– 1 is
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Correct Answer: (C)
{(3, 3), (3, 5), (5, 3), (5, 5)}
Q. R is a relation from {11, 12, 13} to {8, 10, 12} defined by y = x – 3. The relation R – 1 is
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Correct Answer: (B)
{(8, 11), (10, 13)}
Q. R is a relation on N given by N = {(x, y): 4x + 3y = 20}. Which of the following belongs to R?
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Correct Answer: (D)
(2, 4)
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