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Class 12 Mathematics - Chapter 1: Relations and Functions MCQ Questions

15 Questions 30 Minutes
Answered: 0 / 15Unanswered: 15

Your Class 12 Mathematics Study Path

  1. 1LearnNCERT Solutions
  2. 2PracticeChapter MCQs
  3. 3TestChapter Test
  4. 4PrepareSample Papers
  5. 5Exam PracticePrevious-Year Papers
  6. 6Final CheckMock Test
Question 1

The domain of the function f (x) = (frac { 1 }{sqrt{|x|-x}}) is

Question 2

end{array}right.)

Question 3

Set A has 3 elements and the set B has 4 elements. Then the number of injective mappings that can be defined from A to B is:

Question 4

Then:

Question 5

Let R be the relation in the set N given by : R = {(a, b): a = b – 2, b > 6}. Then:

Question 6

Let f: R → R be defined by f(x) = sin x and g : R → R be defined by g(x) = x², then fog is

Question 7

Let f: R – {-(frac { 4 }{3})} → R be a function defined as: f(x) = (frac { 4x }{3x+4}), x ≠ –(frac { 4 }{3}). The inverse of f is map g : Range f → R -{-(frac { 4 }{3})} given by

Question 8

Let A = (1, 2, 3). Then the number of equivalence relations containing (1, 2) is

Question 9

Let R be a relation on the set N of natural numbers defined by nRm if n divides m. Then R is

Question 10

where [x] denotes the greatest integer (≤ x) has no integral solution, then all possible values of a lie in the interval:

Question 11

Let f: R → R be defined as f(x) = x4. Then

Question 12

If f: R → R be given by f(x) = (3 – x³)1/3, then fof (x) is

Question 13

Let f : R → R be defined as f(x) = 3x. Then

Question 14

Let f: R → R be defined by f(x) = x² + 1. Then pre-images of 17 and – 3 respectively, are

Question 15

Let A = {1, 2, 3}. Then number of relations containing {1, 2} and {1, 3}, which are reflexive and symmetric but not transitive is:

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