If `A=([1,2,3],[2,4,5],[X,5,6])` and `A^(T)=A` then `x=?`

If A={:[(1,2,3),(4,5,6)]:} , then A^(T) = ________ .

If x+y=[[1,4,3] , [-2,5,6] , [7,0,2]] and x-y=[[3,2,5] , [4,1,2] , [1,0,4]] then find x and y

If |[2,4],[5,1]|=|[2x,4],[6,x]| then x is

If A = [(5, -1, 4), (2, 3, 5), (5, -2, 6)] , find A^(-1) and use it to solve the following system of equation 5x - y + 4z = 5, 2x + 3y +5z = 2, 5x - 2y + 6z =-1

If A = [(5, -1, 4), (2, 3, 5), (5, -2, 6)] , find A^(-1) and use it to solve the following system of equation 5x - y + 4z = 5, 2x + 3y +5z = 2, 5x - 2y + 6z =-1

If the rank of the matrix [[4,2,1-x],[5,k,1],[6,3,1+x]] is 2 then .k= (5)/(2) ,x= (1)/(5) k= (5)/(2) , x!=(1)/(5) k= 1/5 , x= 5/2 none of these

If the rank of the matrix [[4,2,1-x],[5,k,1],[6,3,1+x]] is 2 then k= 5/2 , x=1/5 k= 5/2 , x!=1/5 k= 1/5 , x=5/2 none of these

If X={1,2,3,{4,5},6,{7,8,9,10} then {4,5} sub X

If the mean of the scores x_(1), x_(2), x_(3), x_(4), x_(5) "and" x_(6) is x, then mean of 5x_(1), 5x_(2), 5x_(3), 5x_(4), 5x_(5), "and" 5x_(6) is ______.