If the inverse of the matrix A =\\begin{array}{ccc}3 & 1 & 2 \\4 & 2 & 1\ 2 & a & 1 \\end{array} does not exist then the value of a is

UPSC NDA Math Model Paper 9

Question : 120 of 120

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If the inverse of the matrix A={

} does not exist then the value of a is

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