If the matrix `[[6, -5, 1],[ 4, 2, -1],[ 14, -1, k]]` has no inverse then `k=`​

Select and write the most appropriate answer from the given alternatives in each of the following : If the matrix {:((6,-5,1),(4,2,-1),(14,-1,k)):} has no inverse, then

The value of t such that the matrix [[1,3,2],[2,5,t],[4,7-t,-6]] has no inverse are

The value of x such that the matrix [[1,3,2],[2,5,x],[4,7-x,-6]] has no inverse is

Matrix A=[[1, 0, -k], [2, 1, 3], [k, 0, 1]] is invertible for

The inverse of the matrix [[3, 2, 6], [1, 1, 2], [2, 2, 5]] is

The inverse of the matrix [[1, 2, 3], [1, 1, 5], [2, 4, 7]] is

Find the inverse of the matrix [[1,-2,1],[-2,3,1],[1,1,5]]

The value of t such the matrix ([1,3,2],[2,5,t],[4,7-t,-6]) has no inverse,are

If the minors of -1 and 3 in the matrix [[2,-1,4],[0,-2,5],[-3,1,3]] are a and b then ab=

The inverse of matrix [[2, 1], [1, -1]] is