Question: (a) Use the procedure outlined in this section to list the first 20 permutations of 1, 2, 3, 4, 5.
(b) In the lexicographic ordering of the permutations of 1, 2, 3, 4, 5, what five permutations come after 42513?
(c) In the lexicographic ordering of the permutations of 1, 2, 3, 4, 5, what five permutations precede 42513?