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NTSE Sample Paper NTSE SAT Practice Test-13

  • question_answer
    \[{{1}^{3}}+{{2}^{3}}+{{3}^{3}}+...+{{9}^{3}}=2025\] ,then the value of \[{{(0.11)}^{3}}+{{(0.22)}^{3}}+{{(0.33)}^{3}}\]\[+...+{{(0.99)}^{3}}\]is close to

    A) 0.2695             

    B)        0.3695

    C) 2.695    

    D)        3.695

    Correct Answer: C

    Solution :

    [c] Given expression \[={{(0.11)}^{3}}({{1}^{3}}+{{2}^{3}}+{{3}^{3}}+....+{{9}^{3}})\] \[=\text{ }0.001331\text{ }\times 2025=2.695275=2.695\] nearly.            


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