If the matrix \left[\begin{array}{ccc}\alpha & 2 & 2 \ -3 & 0 & 4 \ 1 & -1 & 1]\end{array} is not invertible, then :

UPSC NDA 2 2012 Mathematics Paper

Question : 26 of 120

Marks: +1, -0

If the matrix [

] is not invertible, then :

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