Sets and Functions


  1. Let A = {ϕ, {ϕ}, 1, {1, ϕ}, 7}. Which of the following is false?









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    NA

    Correct Option: C

    NA


  1. Write down the power set of the set {0}.









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    Let, A = {0}. The possible subsets of this set A are Φ and {0}.

    Correct Option: D

    Let, A = {0}. The possible subsets of this set A are Φ and {0}, so the power set of the given set A is P(A) = {f, {0}}.



  1. For which of the following cases A and B are equivalent?









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    NA

    Correct Option: C

    NA


  1. Find the cardinal number of the following set {x: x is a natural number ≤ 30 and is divisible by 7 or 11}









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    NA

    Correct Option: C

    NA



  1. Which of the following sets is empty?









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    NA

    Correct Option: B

    NA