If `[ [ 1 , 2 ] , [ -2 , b ] ] + [ [ a , 4 ] , [ 3 , 2 ] ] = [ [ 5 , 6 ] , [ 1 , 0 ] ]` then `a^2 + b^2` is equal to

If a : b = 2: 5 , then ( 3a+ 4b) : (5a +6b) is equal to

A=[[3, 2, 6], [1, 1, 2], [2, 2, 5]], B=[[1, 2, -2], [-1, 3, 0], [0, -2, 1]] , then

If A = {1, 2, 3, 4} , then B = {2, 4, 5, 6} and C = {1, 2, 5, 7, 8} , then (A cup C) cap B is equal to :

If A = [[-1, 2 ,3],[-1, 0, 2],[1, -3, 1]] and B = [[4,5,6],[-1, 0, 1], [2,1,2]], find 4A-3B

Compute the indicated products.(i) [[a, b],[-b ,a]][[a,-b],[b, a]] (ii) [[1],[ 2],[ 3]][[2, 3 ,4]] (iii) [[1,-2],[ 2 ,3]] [[1 ,2, 3],[ 2, 3 ,1]] (iv) [[2, 3 ,4 ],[3, 4 ,5],[ 4, 5, 6]][[1,-3, 5],[ 0, 2, 4],[ 3, 0, 5]] (v) [[2,1],[3,2],[-1,1]] [[1, 0, 1],[-1, 2 ,1]] (vi) [[3,-1, 3],[1,0,2]] [[2 ,-3],[ 1, 0],[ 3, 1]]

If A = {1, 2, 3, 6} and B = {2, 4, 6} be two sets of universal set U = { 1,2, 3 , 4, 5, 6 , 7} . Then ( A' cap B') is equal to

If A=[[1,2,5],[3,4,6]] and B=[[4,0],[2,1],[1,1]] then find AB