3. Let A = {a, {b}} and B={1,2,3}, find the power set for each of A and B. 4. Let A = {a,b,c,d) and B = {y,z}. Find AxB and BxA. 5. Let A = {a,b,c), B = {x,y}, and C = {0}. Find a) AxBxCb) CxBxA c) AxAxA 6. Let V = {A, B, C) and T = {0, 1). Find a) VxT b) T,1?, 14