Question

Let A = {0, 0, W), B = {a, n, t). Find AxB and BXA. AXB = { (Type an ordered pair. Use a comma to separate answers as needed.)

Answer 1

AXB={(0,a), (0,n), (0,t), (w,a), (w,n), (w, t)}

BXA={(a, 0), (a, w), (n, 0), (n, w), (t, 0), (t, w)}

Explanation:

First, you take the first element of set A (0) as the first coordinate and then you take the first element of set B (a) as your second coordinate. The first pair of AxB would be (0,a).

Then you pair the first element of A with the second element of B. Then the first element of A with the third of B.

After that you pair the second element of A with all the elements of B and finally you pair all elements of A with all elements of B. Finally you check that all pairs that are repeated. You just write one for any repeated pair.