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9th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-20

  • question_answer
    \[{{I}^{3}}\,{{(m-n)}^{3}}+{{m}^{3}}\,{{(n-I)}^{3}}+{{n}^{3}}\,{{(I-m)}^{3}}\] equals to ___.

    A)  \[{{(lmn)}^{3}}\,(l-m)\,\,(m-n)\,\,(n-l)\]

    B)  \[(lm+mn+nl)\,\,(3{{l}^{2}}{{m}^{2}}{{n}^{2}})\]

    C)  \[3\,lmn\,\,(m-n)\,\,(n-l)\,\,(l-m)\]

    D)  0

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available


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