`[[7, 1, 2], [9, 2,1]] [[3, 4, 5]] + 2 [4,2]` is equal to

[[7,1,29,2,1]][[3,4,5]]+2[4,2] is equal to

[[7,1,2],[9,2,1]][[3],[4],[5]]+2[[4],[5]] is equal to

5 5/6 + [ 2 2/3 - { 3 2/3 - {3 3/4 (3 4/5 -: 9 1/2)} ] is equal to:

If A = { 3 , 5 , 7 , 9 , 4 }, B = { 1, 3, 5 } , C = { 2, 4, 6 ,7 } ; then A - { B ∩ C } =

A= [[-2,5,7] , [0,3,2], [9,4,1]] Find A' and |A|

if [{:(3,2),(7,5):}]A{:[(-1,1),(-2,1):}]={:[(2,-1),(0,4):}] then trace of A is equal to

5 5/6+[2 2/3-{3 3/4(3 4/5 div 9 1/2)}] is equal to :- 5 5/6+[2 2/3-{3 3/4(3 4/5 div 9 1/2)}] किसके बराबर है ?