JEE Main & Advanced JEE Main Paper (Held On 26 May 2012)

  • question_answer
    Statement-1: The variance of first n odd natural numbers is\[\frac{{{n}^{2}}-1}{3}\] Statement-2: The sum of first n odd natural number is n2 and the sum of square of first n odd natural numbers is \[\frac{n\left( 4{{n}^{2}}+1 \right)}{3}.\].   JEE Main Online Paper (Held On 26-May-2012)  

    A)  Statement 1 is true, Statement 2 is false.

    B) Statement 1 is true, Statement 2 is true; Statement 2 is not a correct explanation for Statement 1.

    C) Statement 1 is false, Statement 2 is true.

    D) Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.

    Correct Answer: A

    Solution :

    Statement 2 : Sum of first n odd natural numbers is not equal to n2. So, statement - 2 is false.


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