I know finding inverse of a matrix in 3 ways 1) if 2*2 1/(ad-bc)[d -b] [-c a] 2) if order is >3 by elementary row operations with identity matrix [ -1 2 -3 | 1 0 0 ] [ 2 1 0 | 0 1 0 ] [ 4 -2 5 | 0 0 1 ] like dis on reducing into In ; B 3) through eigen value process sir all of dese processes are taking bulk of time in xams. I request you to tell me if u r known with any other easiest way