Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 April 2014)

done JEE Main Paper (Held On 19 April 2014) Total Questions - 1

• question_answer1) If \[\Delta r=\left| \begin{matrix}   r & 2r-1 & 3r-2  \\    \frac{n}{2} & n-1 & a  \\    \frac{1}{2}n(n-1) & {{(n-1)}^{2}} & \frac{1}{2}(n-1)(3n-4)  \\ \end{matrix} \right|\]then the value of\[\sum\limits_{r=1}^{n-1}{{{\Delta }_{r}}}\]     JEE Main Online Paper (Held On 19 April 2016)
  A)
  depends only on a
  done clear
  B)
  depends only on n
  done clear
  C)
  depends both on a and n
  done clear
  D)
  is independent of both a and n
  done clear
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