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Question

Mathematics Question on Matrices

If for a matrix A, |A| = 6 and adj A=[124 411 1k0]A = \begin{bmatrix}1&-2&4\\\ 4&1&1\\\ -1&k&0\end{bmatrix} , then k is equal to :

A

0

B

1

C

2

D

-1

Answer

-1

Explanation

Solution

Answer (d) -1