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7th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-12

  • question_answer
    If \[a-\frac{1}{a}=5,\] then the value of \[{{a}^{3}}-\frac{1}{{{a}^{3}}}\]is ­­­­____.

    A)  142                             

    B)  140

    C)  172                             

    D)  125

    E)  None of these

    Correct Answer: B

    Solution :

     Not Available


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