Find the inveres of `[[1,2,4],[3,-19,7],[2,4,8]]`, if exists.

Find the median of the given data 4,6,5,7,8,4,3,2

Find the inverse of each of the matrices (if it exists ) {:[( 2,1,3),( 4,-1,0),( -7,2,1) ]:}

Find the inverse of each of the matrices (if it exists ) {:[( 1,-1,2),( 0,2,-3) ,( 3,-2,4) ]:}

Find the inverse of each of the matrices (if it exists ) {:[( 2,-2),( 4,3) ]:}

Find the inverse of each of the matrices (if it exists ) {:[( 1,2,3),( 0,2,4),( 0,0,5)]:}

Let the sets A and B be given by, A ={1,2,3,4}, B={2,4,6,8,10} and the universal set S={1,2,3,4,5,6,7,8,9,10}. Find (A cupB)' and(A capB)'

Find the mixed ratio of 2:5,7:8 and 3:4 .

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

Find the mode of the following numbers : 4,3,2,5,4,5,3,7,3,2,6

State with reason wheher following functins have inverse (i) f : {1,2,3,4} to {10} with f = {(1,10), (2,10), (3,10) ,(4,10)} (ii) g: {5,6,7,8} to {1,2,3,4} with g = {(5,4) , (6,3), (7,4), (8,2)} (iii) h : {2,3,4,5} to {7,9,11,13} with h = {(2,7), (3,9) , (4, 11), (5,13)}