If D = {w, h, y} and E = {n, o, t}then answer the following:
a) How many possible one-to-one correspondences are there between sets D and E? (b) How many elements are in the Cartesian product D * E?
a) How many possible one-to-one correspondences are there between sets D and E? (b) How many elements are in the Cartesian product D * E?