The positive value of the determinant of the matrix A, whose Adj(Adj(A)) = bmatrix 14 & 28 & -14 -14 & 14 & 28 28 & -14 & 14 bmatrix , is _____.

JEE Main 2022 Mathematics question

The positive value of the determinant of the matrix A, whose Adj(Adj(A)) = , is .

Answer: 14

For a matrix, |adj(adj A)| = . The determinant of the given matrix is |1 2 −1; −1 1 2; 2

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Question ID VK-034618