Question -
Answer -
A = {(-1, 1)}
A x A = {-1, 1} x {-1, 1} = {(-1,-1), (-1, 1), (1,- 1), (1,1)}
A x A x A = {-1, 1} x {(-1, – 1), (-1, 1), (1, -1), (1, 1)} = {(-1, -1, -1), (-1, -1, 1), (-1, 1, -1), (-1, 1, 1), (1, 1, -1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.