Exercise 42 Page 220

We can think of the first set A as the x-coordinates and the second set B as the y-coordinates. The cross product of two sets A and B is written as A* B, where all elements in A are paired with each element in B in ordered pair form (a,b).

A&={ grape, apple, orange} B&={jam, juice} A* B &={ ( grape, jam), ( grape, juice), & ( apple, jam), ( apple, juice), & ( orange, jam), ( orange, juice)}