Find the inverse of `[[1,2,3],[4,5,6],[7,8,9]]`

Using elementary row transformations, find the inverse of the matrix A=[[1,2,3],[2,5,7],[-2,-4,-5]]

If the sets A and B are given by A = {1, 2, 3, 4} B = {2, 4, 6, 8, 10} and the universal set U = {1,2,3,4,5,6,7,8,9,10} then

Without expanding proof that |[1,2,3],[4,5,6],[7,8,9]| =0

Find the inverse of the matrix A=[[8,4,2],[2,9,4],[1,2,8]]

Find the median of 7,6,5,3,9,4,3.

Find the inverse of [(0, 0,-1), (3 ,4 ,5),(-2,-4,-7)]

Find the matrix X so that X[[1 ,2 ,3], [4, 5 ,6]]=[[-7,-8,-9],[2,4,6]]

Find the matrix X so that X[[1, 2, 3],[ 4 ,5, 6]] = [[-7,-8,-9],[2,4,6]]

Find the matrix X so that X[[1, 2, 3],[ 4 ,5, 6]] = [[-7,-8,-9],[2,4,6]]

Find the inverse of the matrix A=[[8, 4, 2],[ 2, 9, 4],[ 1, 2, 8]] .