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Railways R.R.C. (Gorakhpur) Solved Paper Held on 1st Shift 9-11-2014

  • question_answer
    Normal hearing range of a human being is?

    A) 0 to 20 Hertz                 

    B) 20 to 200 Hertz

    C) 20 to 2000 Hertz

    D) 20 to 20000 Hertz

    Correct Answer: D

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