Solved papers for JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

done JEE Main Paper (Held On 12 May 2012) Total Questions - 1

• question_answer1) If\[\left| \begin{matrix} -2a & a+b & a+c  \\ b+a & -2b & b+c  \\ c+a & b+c & -2c  \\ \end{matrix} \right|\]\[=\alpha \left( a+b \right)\left( b+c \right)\left( c+a \right)\ne 0\]then \[\alpha \] is equal to     JEE Main Online Paper (Held On 12 May 2012)
  A)
  \[a+b+c\]                           
  done clear
  B)
                         \[abc\]
  done clear
  C)
                          4
  done clear
  D)
                         1
  done clear
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