If `A=[(1,2,3),(4,5,8)] B=[(1),(8),(9)]` find `AB`

A and B are two matrices of same order 3 xx 3 , where A=[{:(1,2,3),(2,3,4),(5,6,8):}],B=[{:(3,2,5),(2,3,8),(7,2,9):}] The value of adj (adj A) is,

A and B are two matrices of same order 3 xx 3 , where A=[{:(1,2,3),(2,3,4),(5,6,8):}],B=[{:(3,2,5),(2,3,8),(7,2,9):}] Value of |adj (adj adj( adj A)))| is

A and B are two matrices of same order 3 xx 3 , where A=[{:(1,2,3),(2,3,4),(5,6,8):}],B=[{:(3,2,5),(2,3,8),(7,2,9):}] The value of |adj (AB)| is

If A=[{:(5,4),(2,3):}]" and "B=[{:(3,5,1),(6,8,4):}] , find AB and BA whichever exists.

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

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

If A=[{:(,2,-1),(,3,4):}]=B=[{:(,5,2),(,7,4):}],C=[{:(,2,5),(,3,8):}] and AB-CD=0 find D.

If A={1,2,3,4,5,6,7,8} and B={1,3,5,6,7,8,9}, then A-B={2,4},B-A={9}