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Home Aptitude Sets and Functions Comments

  • Question
  • If A = { x : x = n-1/n+1, n ? W and n ? 10 } ;point out the correct statement from the following:


  • Options
  • A. 0 ? A
  • B. 0 ? A
  • C. 0 ? A
  • D. 1/3 ? A

  • Correct Answer
  • 0 ? A 

    Explanation

    NA


  • Sets and Functions problems


    Search Results


    • 1. 
      If U = {a, b, c, d, e, f}, A = {a, b, c}, B = {c, d, e, f}, and C = {c, d, e} find (A ? B) ? C.

    • Options
    • A. A
    • B. B
    • C. C
    • D. U
    • Discuss
    • 2. 
      If the number of items in a set A is n(A) = 40. If n(B) = 26 and n(A ? B) = 16 then n(A ? B) is equal to:

    • Options
    • A. 30
    • B. 40
    • C. 50
    • D. 60
    • Discuss
    • 3. 
      If A = { 2 , 3 , 5 , 7 , 11 } and B = { 1, 3, 5, 7, 9, 11} then what is the value of A? B ?

    • Options
    • A. { 2, 3, 5, 7, 11 }
    • B. { 1, 3, 5, 7, 9, 11}
    • C. { 3, 5, 7, 11}
    • D. { 2, 3, 5, 7, 9, 11}
    • Discuss
    • 4. 
      There were 600 students in a school. Each offered either English or Hindi or Both . If 75% offered English and 45% Hindi, how many offered both?

    • Options
    • A. 48
    • B. 60
    • C. 80
    • D. 120
    • Discuss
    • 5. 
      ? 64009 is equal to :

    • Options
    • A. 352
    • B. 523
    • C. 253
    • D. 532
    • Discuss
    • 6. 
      Let A = {1, 2, {3, 4}, 5}. Which of the following statements are true?

    • Options
    • A. {3, 4} ? A;
    • B. {3, 4} ? A;
    • C. {{3, 4}} ? A;
    • D. {1, 3, 5} ? A.
    • Discuss
    • 7. 
      Let A = {1, 2, {3, 4}, 5}. Which of the following statements is true?

    • Options
    • A. {3, 4} ? A
    • B. {3, 4} ? A
    • C. 1 ? A
    • D. {1, 2, 5} ? A
    • Discuss
    • 8. 
      Find the power set of A = {{a, b}, c}.

    • Options
    • A. {?, {a, b}, {c}}
    • B. {A, {a, b}, {c}}
    • C. {?, A, {a, b}, {c}}
    • D. None of these
    • Discuss
    • 9. 
      In which of the following cases, A = B?

    • Options
    • A. A = {12, 14, 16}, B = {16, 18, 20}
    • B. A = ?, b = {}
    • C. A = {x: x ? W and x < 1}, B = ?
    • D. A = {x: x is a day of the week beginning with S}, B = {Sunday}
    • Discuss
    • 10. 
      Find the cardinal number of the following set {x: x = 2n, n ? N, 4 ? x ? 11}

    • Options
    • A. 8
    • B. 6
    • C. 12
    • D. 4
    • Discuss


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