Solved papers for JEE Main & Advanced JEE Main Paper (Held On 11 April 2015)

done JEE Main Paper (Held On 11 April 2015) Total Questions - 1

• question_answer1) \[\left| \begin{matrix}    {{x}^{2}}+x & x+1 & x-2  \\    2{{x}^{2}}+3x-1 & 3x & 3x-3  \\    {{x}^{2}}+2x+3 & 2x-1 & 2x-1  \\ \end{matrix} \right|=ax-12,\]then 'a' is equal to : [JEE Main Online Paper (Held On 11 April 2015)]  
  A)
   12
  done clear
  B)
   24
  done clear
  C)
   -12
  done clear
  D)
   -24
  done clear
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