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Discussion :: Sets, Relations and Functions

  1.  Let s(w) denote the set of all the letters in w where w is an English word. Let us denote set equality, subset and union relations by =, ⊂ and ∪ respectively. Which of the following is NOT true?

    2. A.

    s(ten) ⊂ s(twenty)
    B.

    s(stored) = s(sorted)
    C.

    s(sixty) ⊂ (s(six)  ∪ s(twenty)
    D.

    None of these

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    Answer : Option D

    Explanation :

    None of these

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