Exercise 2. This software lists the element of $$Z_n$$ that generates all of $$Z_n$$-that is, those elements $$k, 0 \leq k \leq n-1$$, for which $$Z_n$$ = <$$k$$> . How does this set compare with $$U(n)$$? (See computer exercise 1a in Chapter 2.) Make a conjecture.

Please enter $$n$$ and click the button, generators of $$Z_n$$ will show below.