Question

6. [2 marks] Letting A = {2,5} and B = {2,6,8), calculate A x B.

Answer 1

`A* B=\{(2,2),(2,6),(2,8),(5,2),(5,6),(5,8)\}`

Explanation:

Remember, the Cartesian product of two sets A and B is the set:

`A* B=\{(a,b): a\in A, b\in B\}`

Now, if
`A=\{2,5\}` and
`B=\{2,6,8\}`

`A* B=\{(2,2),(2,6),(2,8),(5,2),(5,6),(5,8)\}`