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

1) If A=[[1,2,3],[4,5,6]] and B=[[1],[9],[8]] ,find AB

If A=[[2,9],[4,3]] and B= [[1,5],[7,2]] find AB-BA

If A=[[1,-2, 3,],[ 4, 2, 5,]] and B=[[2, 4], [2,3],[ 5, 1]] , then find AB, BA. Show that A B!=B A .

If A=[[1,2],[3,-4],[5,6]] and B=[[4,5,6],[7,-8,2]] , is AB=BA? Also find AB and BA.

If A=[[2,1],[3,0],[5,1]] and B = [[4,0],[3,8]] then find AB

If A = {1,2,3,4} and B = {6,8,9} , then find A cup B , A cap B and represent these by Venn diagrams .

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

if A=[{:(3,2,1),(1,2,3),(3,-6,1):}],B=[{:(1,4,0),(2,-3,0),(1,2,0):}] and C=[{:(1,2,3),(3,2,1),(8,7,9):}], then find AB-AC.

If A={1,2,3,4,5}, B={1,2,3,6,7} and C{8}, then find (A-B) xx C .

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