10th Class Mathematics Real Numbers Question Bank MCQs - Real Numbers

  • question_answer
    From the following, the rational number whose decimal expansion is terminating is:               (CBSE 2011)

    A) \[\frac{2}{15}\]

    B) \[\frac{11}{160}\]

    C) \[\frac{17}{60}\]

    D) \[\frac{6}{35}\]

    Correct Answer: B

    Solution :

    Sol.      [b] \[\frac{11}{160}=\frac{11}{{{2}^{5}}\cdot 5}\]
    Denominator is of the form \[{{2}^{m}}\cdot {{5}^{n}}\]
    \[\therefore \] its decimal expansion is terminating.


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