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Math Help - Multiple Choice Question

  1. #1
    Junior Member
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    Multiple Choice Question

    Let f: {a,b,c} -> {1,2,3} be a function defined by f={(a, 1), (b, 2), (c, 3)}. Which of the following is NOT true?
    a. The range of f is equal to its domain.
    b. f is a bijection.
    c. f is one-to-one.
    d. The image of f is equal to its codomain.
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  2. #2
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    Hint: What is the domain of f and what is the range of f?
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