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Railways R.R.C. (Hazipur) Solved Paper Held on 27-10-2013

  • question_answer
    If\[x={{y}^{a}},\,\,y={{z}^{b}}\] and\[z={{x}^{c}}\], then abc=?

    A) 4                                 

    B) 3

    C) 2                                 

    D) 1

    Correct Answer: D

    Solution :

    \[z={{x}^{3}}={{({{y}^{a}})}^{c}}={{(y)}^{ac}}={{({{z}^{b}})}^{ac}}={{z}^{abc}}\] Hence, abc = 1


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