If B= bmatrix 3 & 2 & 0 2 & 4 & 0 1 & 1 & 0 bmatrix , then what is adjoint of B equal to?

NDA 2019 Mathematics question

If , then what is adjoint of B equal to?

Answer: (A)

Cofactors: , , ; every other cofactor contains a zero column and is 0. The cofactor matrix is $ 0 & 0 &

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Question ID VK-035352