JEE Questions for Maths Sets Relations And Functions Quiz 8 - MCQExams.com


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  • 2)
    Maths-Sets Relations and Functions-50029.png
  • 1
  • –1
The inverse of the function f(x) = log10 x is
  • 10 x
  • x10
  • e10
  • e x

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  • 2)
    Maths-Sets Relations and Functions-50034.png

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  • Maths-Sets Relations and Functions-50036.png

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  • 2)
    Maths-Sets Relations and Functions-50040.png

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  • Maths-Sets Relations and Functions-50042.png

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  • 1

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With reference to a universal set, the inclusion of a subset in another, is relation, which is
  • Symmetric only
  • Equivalence relation
  • Reflexive only
  • None of these
Let R and S be two non – void relations on a set A. which of the following statements is false
  • R and S are transitive ⇒ R ∪ S is transitive
  • R and S are transitive ⇒ R ∩ S is transitive
  • R and S are symmetric ⇒ R ∪ S is symmetric
  • R and S are reflaxive ⇒ R ∩ S is reflexive
Two finite sets have m and n element respectively The total number of subsets of first set is 112 more than the total number of sub sets of the second set The value of m and n respectively are
  • 5,2
  • 4,7
  • 7,4
  • 2,5
A survey shows that 70% of the Indian like mango wheres 82% like apple. If x% of Indian like both mango and apples then
  • x = 52
  • 52 ≤ x ≤ 70
  • x = 70
  • 70 ≤ x ≤ 82
If X ∪ {3,4} = {1,2,3,4,5,6} the which of the following is true
  • Smallest set X = {1,2,5,6}
  • Smallest set X= {1,2,3,5,6}
  • Smallest set X= {1,2,3,4}
  • Greatest set X= {1,2,3,4}
If two sets A and B are having 43 elements in comman, then the number of elements common to each of the sets A × B and B × A is
  • 432
  • 243
  • 4343
  • 286
In a certain town 30% families own a scooter and 40% on a car 50% own neither a scooter nor a car 2000 families own both a scooter and car consider the following statements in this regard
20% families own both scooter and car
35% families own either a car or a scooter
10000 families live in town Which of the above statement are correct ?
  • 2 and 3
  • 1,2 and 3
  • 1 and 2
  • 1 and 3

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  • A = B
  • A ⊂ B
  • A ≠ B
  • B ⊂ A

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  • 162
  • 36
  • 60
  • 120
There are three-three sets are given in column-A and column-B
Maths-Sets Relations and Functions-50056.png
  • 1-A 2-B, 3-C
  • 1-B, 2-A, 3-C
  • 1-B, 2-C, 3-A
  • 1-A, 2-C, 3-B

Maths-Sets Relations and Functions-50058.png
  • 100
  • 120
  • 140
  • 40
If U = {1,2,3} and A = {1,2} then [P(A)]\' = ..............
  • {{3}, {2,3}, {1,3}, {1,2}, ϕ }
  • {{3}, {2,3}, {1,3}, {1,2,3} }
  • {{3}, {2,3}, {1,3}, {1,2,3}, ϕ}
  • {{3}, {2,3}, {1,3}, {1,2}}

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  • ϕ
  • 2)
    Maths-Sets Relations and Functions-50062.png

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  • Maths-Sets Relations and Functions-50064.png

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  • 2)
    Maths-Sets Relations and Functions-50068.png

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  • Maths-Sets Relations and Functions-50070.png
Let A = {(x,y) : y = ex , x ϵ R}, B = {(x,y) : y = e-x , x ϵ R} then
  • A ∩ B = ϕ
  • A ∩ B = ϕ
  • A ∪ B = R
  • A ∪ B = A
Let R be a relation in N defined by R={(1 + x, 1 + x2 ) / x < 5, x ϵ N} which of the following is false ?
  • R = {(2,2), (3,5), (4,10), (5,17), (6,25)}
  • Domain of R = {2,3,4,5,6}
  • Range of R = {2,5,10,17,26}
  • (and (are true
The relation ≤ on numbers has the following properties.
(i) a ≤ a ∀ a ϵ R (Reflexivity)
(ii) If a ≤ b and b ≤ a then a = b ∀ a, b ϵ R (Antisymmetry)
(iii) If a ≤ b and b ≤ c then a ≤ c ∀ a, b ϵ R (Transitivity)
Which of the above properties the relation ⊂ on p(A) has ?
  • (i) and (ii)
  • (i) and (iii)
  • (ii) and (iii)
  • (i), (ii) and (iii)
A Relation R is defined in the set of integers I as follows (x,y) ϵ R if x 2+ y2 = 9 which of the following is false ?
  • R = {(0,3), (0,-3), (3,0), (-3,0)}
  • Domain of R = {-3,0,3}
  • Range of R = {-3,0,3}
  • None of the above
Let R be the real line consider the following subsets of the plane R × R ,S = {(x, y) / y = x + 1 and 0 < x < 2}, T = {(x, y) / x - y is an integer}.Which one of the following is true ?
  • T is an equivalence relation on R but S is not.
  • Neither S nor T is an equivalance relation on R
  • Both S and T are equivalence relations on R
  • S is an equivalence relation on R but T is not.
Let W denotes the words in the English dictionary Define the relation R by R = {(x, y) ϵ W × W the ward x and y have at least one letter in comman} Then R is
  • Not reflexive, symmetric and transitive
  • Reflexive, symmetric and not transitive
  • Reflexive, symmetric and transitive
  • Reflexive, not symmetric and transitive
Which one of the following relations on R is an equivalence relation ?

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  • 2)
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Which of the following defined on Z is not an equivalence relation.

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    Maths-Sets Relations and Functions-50083.png

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  • Maths-Sets Relations and Functions-50085.png

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  • S1 is not a graph of a function
  • S2 is not a graph of a functicn
  • S3 is not a graph of a function
  • S41 is not a graph of a function
The relation R defined on the let A = {1,2,3,4,5} by R = {(x, y) / | x2 - y2 | < 16} is given by
  • {(1,1), (2,1), (3,1), (4,1), (2,3)}
  • {(2,2), (3,2), (4,2), (2,4)}
  • {(3,3), (4,3), (5,4), (3,4)}
  • None of these

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  • [5,9]
  • (5,9]

  • Maths-Sets Relations and Functions-50090.png

  • Maths-Sets Relations and Functions-50091.png

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  • 199
  • 201
  • 202
  • 200

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  • Maths-Sets Relations and Functions-50096.png
  • x

  • Maths-Sets Relations and Functions-50097.png

  • Maths-Sets Relations and Functions-50098.png

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  • Maths-Sets Relations and Functions-50101.png
  • 2)
    Maths-Sets Relations and Functions-50102.png

  • Maths-Sets Relations and Functions-50103.png

  • Maths-Sets Relations and Functions-50104.png

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  • 5
  • 8
  • 0
  • 10

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  • 2)
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  • Maths-Sets Relations and Functions-50111.png

  • Maths-Sets Relations and Functions-50112.png

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  • 2)
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  • Maths-Sets Relations and Functions-50118.png

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  • Statement 1is true
  • Statement 2 is true
  • 1 and 2 both are true
  • 1 and 2 both are false

Maths-Sets Relations and Functions-50122.png
  • (2,4)
  • (-2,4)
  • [2,4)
  • [-2,4)

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  • Maths-Sets Relations and Functions-50125.png
  • 2)
    Maths-Sets Relations and Functions-50126.png
  • 1
  • -1
Let f : R → R, g : R →R be two functions such that f(x) = 2x - 3, g(x) = x3 + 5.The function (fog)-1 (x) is equal to

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  • 2)
    Maths-Sets Relations and Functions-50129.png

  • Maths-Sets Relations and Functions-50130.png

  • Maths-Sets Relations and Functions-50131.png

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  • 1
  • 2
  • -2
  • -1

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  • f(x) + f(y)
  • f(x) f(y)
  • f(x)/f(y)
  • 2 f(x) ∙ f(y)

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  • Maths-Sets Relations and Functions-50141.png

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  • Maths-Sets Relations and Functions-50144.png
  • 2)
    Maths-Sets Relations and Functions-50145.png

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  • Maths-Sets Relations and Functions-50147.png
A function f : R →R satisfies the equation f(x)f(y)-f(x y) = x + y for all x,y ∈ R and f(> 0, then

  • Maths-Sets Relations and Functions-50149.png
  • 2)
    Maths-Sets Relations and Functions-50150.png

  • Maths-Sets Relations and Functions-50151.png

  • Maths-Sets Relations and Functions-50152.png

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  • Maths-Sets Relations and Functions-50155.png
  • 2)
    Maths-Sets Relations and Functions-50156.png

  • Maths-Sets Relations and Functions-50157.png

  • Maths-Sets Relations and Functions-50158.png

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  • [4,12]
  • [0,3]

  • Maths-Sets Relations and Functions-50161.png

  • Maths-Sets Relations and Functions-50162.png

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  • [-4,3]
  • [-4,4]
  • [0,3]
  • [0,4]

Maths-Sets Relations and Functions-50165.png
  • {1,2,3}
  • {2,3}
  • {2,3,4}
  • {2,3,4,5}
Let X = {a,b,c,d} then one - one mapping f : X → X such that f(a) = a, f(b) ≠ b, f(d) ≠ d are given by
(i) {(a,a), (b,c), (c,d), (d,b)}
(ii) {(a,a,), (b,d), (c,c), (d,b)}
(iii) {(a,a), (b,d), (c,b), (d,c)}
  • only (i) is true
  • (i) & (ii) is true
  • (i), (ii) and (iii) are true
  • only (iii) is true
0:0:1


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