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SSC SSC CHSL TIER-I Solved Paper Held on 08.01.2017

  • question_answer
    The sum of a non-zero number and its reciprocal is 2. What is the number?

    A)  1

    B)  2

    C)  0

    D)  4

    Correct Answer: A

    Solution :

     Let the number be\[x.\]According to the question. \[x+\frac{1}{x}=2\] \[\Rightarrow \]\[{{x}^{2}}+1=2x\] \[\Rightarrow \]\[{{x}^{2}}-2x+1=0\] \[\Rightarrow \]\[{{(x-1)}^{2}}=0\] \[\Rightarrow \]\[x-1=0\] \[\Rightarrow \]\[x=1\]


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