A={1,2,3} B={2,4,6}
Solve: AxB
A has 3 elements, B has 3 elements, so AxB will have
3x3 or 9 elements.
AxB consists of every possible ordered pair of elements,
such that each pair has an element of A as its first number,
and an element of B as its second number.
I'll color the elements of A red and the elements of B blue,
so you can see how to make AxB:
AxB =
{1,2,3}x{2,4,6} =
{(1,2),(1,4),(1,6),(2,2),(2,4),(2,6),(3,2),(3,4),(3,6)}
Edwin
