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

  • question_answer
    If \[x+y+z=6\] and \[{{x}^{2}}+{{y}^{2}}+{{z}^{2}}=20,\] then find the value of \[{{x}^{3}}+{{y}^{3}}+{{z}^{3}}-3xyz.\]

    A)  64                               

    B)  70

    C)  72       

    D)  76

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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