Set Language English Medium Free Online Test 1 Mark Questions 2020-2021

9th Standard

    Reg.No. :
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Maths

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. Which of the following is correct?

    (a)

    {7} ∈ {1,2,3,4,5,6,7,8,9,10}

    (b)

    7 ∈ {1,2,3,4,5,6,7,8,9,10}

    (c)

    7 ∉ {1,2,3,4,5,6,7,8,9,10}

    (d)

    {7} \(\nsubseteq \) {1,2,3,4,5,6,7,8,9,10}

  2. If U ={x | x ∈ N, x < 10} and A = {x | x ∈ N, 2 ≤ x < 6} then (A′)′ is

    (a)

    {1, 6, 7, 8, 9}

    (b)

    {1, 2, 3, 4}

    (c)

    {2, 3, 4, 5}

    (d)

    { }

  3. If A = {x, y, z} then the number of non - empty subsets of A is

    (a)

    8

    (b)

    5

    (c)

    6

    (d)

    7

  4. If A∪B = A∩B, then

    (a)

    A ≠ B

    (b)

    A = B

    (c)

    A ⊂ B

    (d)

    B ⊂ A

  5. The shaded region in the adjacent diagram represents

    (a)

    (A∪B)′

    (b)

    (A∩B)′

    (c)

    A′∩B′

    (d)

    A∩B

  6. If n(A) = 10 and n(B) = 15, then the minimum and maximum number of elements in A ∩ B is

    (a)

    (10,15)

    (b)

    (15,10)

    (c)

    (10,0)

    (d)

    (0,10)

  7. Let A = {∅} and B = P(A), then A∩B is

    (a)

    { ∅, {∅} }

    (b)

    {∅}

    (c)

    (d)

    {0}

  8. A = {set of odd natural numbers}, B = {set of even natural numbers}, then A and B are ___________

    (a)

    equal set

    (b)

    equivalent sets

    (c)

    overlapping sets

    (d)

    disjoint sets

  9. The set does not have a proper subset is __________

    (a)

    Finite set

    (b)

    Infinite set

    (c)

    Null set

    (d)

    Singleton set

  10. If U={x:x\(\in \)N and x<10}, A={1, 2, 3, 5, 8} and B={2, 5, 6, 7, 9}, then \(n\{ (A\cup B)'\} \) is

    (a)

    1

    (b)

    2

    (c)

    4

    (d)

    8

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