If `A=[[-1,8,4],[2,-3,4],[0,-1,7]]`, then `|A|=?`

3.If A= [[1,2,3],[2,3,4],[3,4,5]] , then 2A'-A=_ (A) [[1,2,3],[2,3,6],[3,3,7]] (B) [[-1,0,3],[4,5,6],[7,-8,1]] (C) [[1,5,3],[-2,4,0],[5,7,8]] (D)None of these

If A=[[1,0,0],[0,1,0],[0,0,1]] then value of |A+A'| is 1)2 2)8 3)4 4)0

If, A=[(1,1,2),(0,-3,5),(-2,3,4)] ,then is 4A=[(4,4,8),(0,-12,20),(-8,12,16)] ?

If A=[[1,0,5],[3,2,7],[5,4,8]],B=[[3,1,2],[9,0,-6],[7,4,1]],C=[[2,0,-1],[7,5,6],[1,1,4]] , verify that A+(B+C)=(A+B)+C

find the rank of [[2,-4,3,-1],[1,-2,-1,-4],[0,1,-1,3],[4,-7,4,-4]]

If the matrix A=[[1,2,3,0],[2,4,3,2],[3,2,1,3],[6,8,7,alpha]] is of rank 3 then alpha= (A) -5 (B) 5 (C) 4 (D) -4

(D) Find the rank of the matrix A= [[1,2,3,0],[2,4,3,2],[3,2,1,3],[6,8,7,5]]

If A=[[3,9,0],[1,8,-2]] and B=[[4,0,2],[7,1,4]] ,find A+B and A-B .