In a square matrix, the elements of a column are 2, 5k+1,3 and the cofactors of another column are 1-5k, 2, 4k-2 .Then 3k is

HCF of k, 2k, 3k, 4k, and 5k is

If A is a square matrix of order 3 and |5A| = k|A|, then write the value of k

If A is a square matrix of order 2, |A| ne 0 and |4A| = k |A|, then the value of k is :

If 3k-7 is the arithmetic mean of 3k+4 and k+12 then the value of 2k+5

The element in the second row and third column of the matrix [(4,5,-6),(3,-4,3),(2,1,0)] is

If k+3, 5k-1 and 3k+2 are in A.P., find the value of k.

If A is a square matrix of order n xx n and k is a scalar, then adj (kA) is equal to (1) k adj A (2) k^n adj A (3) k^(n-1) adj A (4) k^(n+1) adj A

Let A be a square matrix of order n and let B be a matrix obtained from A by multiplying each element of a row/column of A by a scalar k then |B|=k|A|

If the number 1/(k+2),1/k^2 and 1/(4k+5) are three consecutiv terms of an HP then find k.

For what value of k will the consecutive terms 2k + 1, 3k+3 and 5k-1 form an AP?