Question

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

Answer 1

Answer:

$A\times B=\{(2,2),(2,6),(2,8),(5,2),(5,6),(5,8)\}$

Step-by-step explanation:

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

$A\times B=\{(a,b): a\in A, b\in B\}$

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

$A\times B=\{(2,2),(2,6),(2,8),(5,2),(5,6),(5,8)\}$