1.If `a ne0` and `|[1+a,1,1],[1,1+a,1],[1,1,1+a]|=0` then `a=?`

If A=[[1,0,1],[0,1,1],[1,0,0]] then A^-1 is

If A=[[1,0,1],[0,1,1],[1,0,0]], then |A| is

If A=[[1,1],[0,1]],B=[[0,1],[1,0]] then AB=

If A=[[1,0,0],[0,1,0],[a,b,-1]] and A=A^(-1) then a+b=?

If A=[[1,1] , [0,1]] and B=[[1,-1] , [0,1]] then AB=

If a != 0, b!= 0, c!= 0 , then |(1 +a,1,1),(1,1 +b,1),(1,1,1 +c)| is equal to

24. Eigen values of [[1, 1, 1],[1,1,1],[1,1,1]] are (a) 0,00 (b) 0, 01 (c) 0, 0, 3 (d)1, 1, 1

if x ne 0 , y ne 0 ,z ne 0 " and " |{:(1+x,,1,,1),(1+y,,1+2y,,1),(1+z,,1+z,,1+3z):}|=0 then x^(-1) +y^(-1) +z^(-1) is equal to