`|[5,-6],[3,2]|+|[-4,6],[3,4]|` is equal to

If A=([4,2],[5,6]) then |A'| is equal to

5-[4-(3-(3-3-6)}] is equal to :

2-[3-{6-(5divoverline(4-3))}] is equal to :

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

If A= [{:(,1,2),(,3,-4),(,5,6):}]and B=[{:(,4,5,6),(,7,-8,2):}] will AB be equal to BA. Also find AB & BA.

If {[(5,1,4),(7,6,2),(1,3,5)][(1,6,-7),(6,2,4),(-7,4,3)][(5,7,1),(1,6,3),(4,2,5)]}^(2020)=[(a_(1),a_(2),a_(3)),(b_(1),b_(2),b_(3)),(c_(1),c_(2),c_(3))] , then the value of 2|a_(2)-b_(1)|+3|a_(3)-c_(1)|+4|b_(3)-c_(2)| is equal to

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