JEE Mathematics Relation and Functions MCQs Set D

Refer to JEE Mathematics Relation and Functions MCQs Set D provided below available for download in Pdf. The MCQ Questions for Full Syllabus Mathematics with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Relation and Functions are an important part of exams for Full Syllabus Mathematics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Mathematics and also download more latest study material for all subjects

MCQ for Full Syllabus Mathematics Relation and Functions

Full Syllabus Mathematics students should refer to the following multiple-choice questions with answers for Relation and Functions in Full Syllabus.

Relation and Functions MCQ Questions Full Syllabus Mathematics with Answers

 

 

Question: Let S be a finite set containing n elements. Then the total number of binary operations on S is:

  • a)
  • b)

  • c) nn
  • d) n2

Answer:  

 

Question: If a function f : [2, ∞) →B defined by f(x) = x2 – 4x + 5 is a bijection, then B is equal to:

  • a) [1, ∞)
  • b) [5, ∞)
  • c)  R
  • d) [2, ∞)

Answer: [1, ∞)

 

Question:

  • a) 2
  • b) 0
  • c) 1
  • d) 1/2

Answer: 2

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: Let Φ(x)= ax-b/x-a, the range being all real numbers except a, and b = a2. Then its inverse is:

  • a) (ax – b)/(x – a)
  • b) (bx – a)/(x – a)
  • c) (x – a)/(ax – b)
  • d) (a – bx)/(1 – ax)

Answer: (ax – b)/(x – a)

 

Question:

  • a) – 1
  • b) 2
  • c) 1
  • d) 0

Answer: – 1

 

Question: The domain of f(x) = cos–1 (3x – 1) is :

  • a) f (x)= 1-x/1+x
  • b) f (x) = 3log x
  • c) f (x) = 3x(x+1)
  • d) none of these

Answer: f (x)= 1-x/1+x

 

Question: Let A = R – {3}, B = R – {1}. Let f : A → B be defined by f(x) =x-2/x+3 Then :

  • a) f is bijective
  • b) f is one-one but not onto
  • c) f is onto but not one-one
  • d) none of these

Answer: f is bijective

 

Question: The function f : R → R defined by f (x) = (x – 1) (x – 2) (x – 3) is

  • a) onto but not one-one
  • b) neither one-one nor onto
  • c) one-one but not onto
  • d) both one-one and onto

Answer: onto but not one-one

 

Question:

  • a) [1, 2)
  • b) [0, 2]
  • c) [0, 2)
  • d) [1, 2]

Answer: [1, 2)

 

Question:

  • a) None of these
  • b) 1
  • c) – 1
  • d) – 2

Answer: None of these

 

Question: Given the relation R = {(1, 2), (2, 3)} on the set A = {1, 2, 3}, the number of ordered pairs which when added to R make the R an equivalence relation is :

  • a) 6
  • b) None of these
  • c) 5
  • d) 7

Answer: 6

 

Question:

  • a) – 1
  • b) 2
  • c) – 2
  • d) 1

Answer: – 1

 

Question:

The function f : R → R defined by f (x) = sin x is :

  • a) many one
  • b) onto
  • c) into
  • d) one-one

Answer: many one

 

More Questions..........................

 

Question: If the number of elements in set A is m and number of element in set B is n then find number of relation defined from A to B

  • a) 2mn
  • b) 2m+n
  • c) 2m–n
  • d) 2m/n

Answer: 2mn

 

Question:

  • a) {(9, 1), (6, 2), (3, 3)}
  • b) {(8, 1), (6, 2), (3, 3)}
  • c) {(9, 1), (4, 2), (3, 3)}
  • d) {(7, 1), (6, 2), (2, 2)}

Answer: {(9, 1), (6, 2), (3, 3)}

 

Question: In the above question, find Domain of R

  • a) {9, 6, 3}
  • b) {6, 4, 3}
  • c) {9, 5, 3}
  • d) {8, 1, 3}

Answer: {9, 6, 3}

 

Question: In the above question, find Range of R

  • a) {1, 2, 3}
  • b) {9, 5, 3}
  • c) {9, 6, 3}
  • d) {6, 4, 3}

Answer: {1, 2, 3}

 

Question: Which of the following is a function?

  • a) { (1,2), (2,2), (3,2), (4,2)}
  • b) { (1,2), (3,3), (2,3), (1,4)}
  • c) {(1,4), (2,5), (1,6) , (3,9)}
  • d) {(2,1), (2,2), (2,3), (2,4)}

Answer: { (1,2), (2,2), (3,2), (4,2)}

 

Question:

  • a) 1 – x
  • b) x – 1
  • c) x
  • d) x + 1

Answer: 1 – x

 

Question:

  • a) R – {–1,0,1}
  • b) R – {0,1}
  • c) R
  • d) None of these

Answer: R – {–1,0,1}

 

Question:

  • a) [–1,1]
  • b) {–1,1}
  • c) {0,1}
  • d) {–1,0,1}

Answer: [–1,1]

 

Question:

  • a)

  • b)

  • c)

  • d) x + 3

Answer:

 

Question: Function f (x) = x–2 + x–3 is-

  • a) a rational function
  • b) an inverse function
  • c) None of these
  • d) an irrational function

Answer: a rational function

 

Question: The period of | sin 2x | is-

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) x
  • b) –x
  • c) 1/x
  • d) –1/x

Answer: x

 

Question: If f(x) = 2|x – 2| – 3|x – 3|, then the value of f(x) when 2 < x < 3 is

  • a) 5x – 13
  • b) 5 – x
  • c) x – 5
  • d) None of these

Answer: 5x – 13

 

Question:

  • a)

  • b)

  • c) R
  • d) No value of x

Answer:

 

Question:

  • a) [–2,2] – (–1,1)
  • b) [1,2]
  • c) [–1,2] – {0}
  • d) [–2,2] – {0}

Answer: [–2,2] – (–1,1)

 

Question:

  • a) –7
  • b) 7
  • c) –14
  • d) 14

Answer: –7

 

Question: The relation R = { (1, 1), (2, 2), (3, 3)} on the set {1, 2, 3} is :

  • a) reflexive only
  • b) an equivalence relation
  • c) transitive only
  • d) symmetric only

Answer: reflexive only

 

Question:

  • a) one-one and onto
  • b) one-one but not onto
  • c) onto but not one-one
  • d) neither one-one nor onto

Answer: one-one and onto

 

Question:

  • a) one-one but not onto
  • b) onto but not one-one
  • c) neither one-one nor onto
  • d) one-one and onto

Answer: one-one but not onto

 

Question:

  • a) one-one & onto
  • b) neither one-one nor onto
  • c) one-one but not onto
  • d) onto but not one-one

Answer: one-one & onto

 

Question: R is a relation from {11, 12, 13} to {8, 10, 12} defined by y = x – 3. Then R–1 is

  • a) {(8, 11), (10, 13)}
  • b) {(10, 13), (8, 11)}
  • c) {(11, 18), (13, 10)}
  • d) None of these

Answer: {(8, 11), (10, 13)}

 

Question:

  • a) 1 and 2 are correct
  • b) 1 and 3 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 2 are correct

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question: If f : [0, 2]→ [0, 2] is a bijective function defined by f (x) = ax2 + bx + c, where a, b, c are non-zero real numbers then f (2) is equal to –

  • a) 0
  • b) 2
  • c) cannot be determined
  • d)

Answer: 0

 

Question: If f : [0, 2]→ [0, 2] is a bijective function defined by f (x) = ax2 + bx + c, where a, b, c are non-zero real numbers then Which of the following is one of the roots f (x) = 0 ?

  • a) 1/a
  • b) 1/b
  • c) 1/c
  • d) None of these

Answer: 1/a

 

Question: If f : [0, 2]→ [0, 2] is a bijective function defined by f (x) = ax2 + bx + c, where a, b, c are non-zero real numbers then

Which of the following is not a value of a ?

  • a) 1
  • b) 1/2
  • c) –1/4
  • d) – 1/2

Answer: 1

 

Question:

  • a) Statement -1 is True, Statement-2 is False
  • b) Statement -1 is False, Statement-2 is True.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a explanation for Statement-1.

Answer: Statement -1 is True, Statement-2 is False

 

Question: Let for real numbers x and y we define the relation R such that

Statement-1 : The relation R is an equivalence relation.
Statement-2 : A relation R is an equivalence relation if it is reflexive, transitive and symmetric.

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is False, Statement-2 is True.

 

Question: Statement-1 : Every relation which is symmetric and transitive is also reflexive.

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is False, Statement-2 is True.

 

Question:

  • a) None of these
  • b) R – {1}
  • c) [0,1]
  • d) Both

Answer: None of these

 

Question:

  • a) 0
  • b) 1/2
  • c) –1
  • d) –2

Answer: 0

 

Question:

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

Question:

  • a) 2f(x)
  • b) – f(x)
  • c) f (x)
  • d) f (–x)

Answer: 2f(x)

 

Question: Find the range of f (x) = x– [x]

  • a) [0, 1)
  • b) (0, 1)
  • c) [0, 1]
  • d) [–1, 0)

Answer: [0, 1)

 

Question: Range of f (x) = 3 + x – [x+2] will be

  • a) [1, 2)
  • b) [0, 2)
  • c) [0, 1]
  • d) [–1, 0)

Answer: [1, 2)

 

Question: If X = {x1, x2, x3}, Y = (x1, x2, x3,x4,x5} and R1, is a relation from X to Y, then which of the followings are reflexive relation? (1) R1 : {(x1, x1), (x2, x2), (x3, x3)} (2) R1 : {(x1, x1), (x2, x2)} (3) R1 : {(x1, x1), (x2, x2),(x3, x3),(x1, x3),(x2, x4)} (4) R1 : {(x1, x1), (x2, x2),(x3, x3),(x4, x4)}

  • a) 1 and 3 are correct
  • b) 1 and 2 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 3 are correct

 

Question: If X = {a, b, c} and Y = {a, b, c, d, e, f} then find which of the following relation are symmetric relation?

(1) R1 : { } i.e. void relation
(2) R3 : {(a, b), (b, a)(a, c)(c, a)(a, a)}
(3) Every null relation
(4) R2 : {(a, b)}

  • a) 1, 2 and 3 are correct
  • b) 2 and 4 are correct
  • c) 1 and 2 are correct
  • d) 1 and 3 are correct

Answer: 1, 2 and 3 are correct

 

Question: If X = {a, b, c} and Y = {a, b, c, d, e} then which of thefollowing are transitive relation.

(1) R1 = { }
(2) R2 = {(a, a)}
(3) R3 = {(a, a).(c, d)}
(4) R4 = {(a, b), (b, c)(a, c)}

  • a) 1, 2 and 3 are correct
  • b) 2 and 4 are correct
  • c) 1 and 2 are correct
  • d) 1 and 3 are correct

Answer: 1, 2 and 3 are correct

 

Question:

Domains of R and R–1 are –

  • a) {2, 4, 6, 8}, {4, 3, 2, 1}
  • b) {4, 3, 2, 1}, {2, 4, 6, 8},
  • c) {4, 6, 8, 10}, {4, 3, 2, 1}
  • d) None of these

Answer: {2, 4, 6, 8}, {4, 3, 2, 1}

 

Question:

Range of R is –

  • a) {4, 3, 2, 1}
  • b) None of these
  • c) {2, 4, 6, 8}
  • d) {4, 6, 8, 10}

Answer: {4, 3, 2, 1}

 

Question:

Range of R–1 is –

  • a) {2, 4, 6, 8}
  • b) {4, 6, 8, 10}
  • c) {4, 3, 2, 1}
  • d) None of these

Answer: {2, 4, 6, 8}

 

Question:

  • a) Statement -1 is True, Statement-2 is False
  • b) Statement -1 is False, Statement-2 is True.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is True, Statement-2 is False

 

Question:

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is False, Statement-2 is True.

 

Question:

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

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