Maths Chapter 1 – Relations and Functions MCQ Question Answers for Various Entrance Exams

 

1. Question
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2. Question
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3. Question
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4. The smallest integer function f(x) = [x] is
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6. Objective function of a L.P.P.is
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8. Question
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9. Total number of equivalence relations defined in the set S = {a, b, c} is
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10. Let A = {1, 2, 3}. Then the number of relations containing (1, 2) and (1, 3), which are reflexive and symmetric but not transitive is
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11. Question
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12. Let * be the binary operation on N given by a * b = HCF (a, b) where, a, b ∈ N. Find the value of 22 * 4.
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13. Number of binary operations on the set {a, b} are
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14. Let a, b and c be vectors with magnitudes 3, 4 and 5 respectively and a + b + c = 0, then the values of a.b + b.c + c.a is
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16. Let A = {1, 2, 3} and consider the relation R = {(1, 1), (2, 2), (3, 3), (1, 2), (2, 3), (1, 3)}. Then R is
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17. Question
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21. Question
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22. Question
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23. Let R be a relation on the set N of natural numbers denoted by nRm ⇔ n is a factor of m (i.e. n | m). Then, R is
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24. If there is an error of a% in measuring the edge of a cube, then the percentage error in its surface area is

25. The maximum number of equivalence relations on the set A = {1, 2, 3} are
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