11th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-11

  • question_answer
    The variance of first n natural number is______.

    A)  \[\frac{{{n}^{2}}+1}{12}\]                

    B)  \[\frac{{{n}^{2}}-1}{12}\]

    C)  \[\frac{n\,(n-1)}{12}\]               

    D)  \[\frac{n\,(n+1)}{12}\]

    E)  None of these

    Correct Answer: B

    Solution :

     Not Available


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