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Railways R.R.C. (Patna) Solved Paper Held on 1st Shift 2-11-2014

  • question_answer
    The value of \[\{{{(.98)}^{2}}+{{(.02)}^{2}}+2\times .98\times 0.02-1\}\]is?

    A) 0                                 

    B) 1

    C) 1.09                             

    D) 1.98

    Correct Answer: A

    Solution :

    \[\left[ {{(0.98)}^{2}}+{{(0.02)}^{2}}+2\times .98\times 0.02-1 \right]\] \[={{(0.98+0.02)}^{2}}-1\] \[=1-1\] \[=0\]


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