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5th Class Mathematics Decimals and Fractions Question Bank Fraction & Decimals

  • question_answer
    Simplify\[\left( \frac{1}{2}+ \right.\] \[\frac{1}{6}+\] \[\frac{1}{12}+\] \[\frac{1}{20}+\] \[\frac{1}{30}+\] \[\frac{1}{42}+\] \[\frac{1}{56}+\] \[\frac{1}{72}+\] \[\frac{1}{90}+\] \[\frac{1}{110}+\]\[\left. \frac{1}{132} \right)\div \frac{11}{12}\]

    A)  2                                

    B)  0

    C)  1                                

    D)  None of these

    Correct Answer: C

    Solution :

    \[\left( 1-\frac{1}{2}+\frac{1}{2}-\frac{1}{3}.........\frac{1}{11}+\frac{1}{11}-\frac{1}{12} \right)\div \frac{11}{12}\] \[=\frac{12-1}{12}\times \frac{12}{11}=\frac{11}{11}=1\]


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