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Railways R.R.C. (Hazipur) Solved Paper Held on 1-12-2013

  • question_answer
    \[{{(25.732)}^{2}}-{{(15.732)}^{2}}=?\]

    A) 4.1464             

    B) 41.464

    C) 414.64             

    D) 4164.4

    Correct Answer: C

    Solution :

    \[{{(25.732)}^{2}}-{{(15.732)}^{2}}\]  \[=(25.732+15.732)(25.732-15.732)\] \[=41.464\times 10\] \[=414.64\]


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