Question: John Sununu was once the governor of New Hampshire, and his name reminds one of the authors of a palindrome.
(a) What is a palindrome and what made the author think of this?
(b) How many seven-letter palindromes (not necessarily real words) begin with the letter "S" and contain at most three different letters?
(c) How many seven-letter palindromes (not necessarily real words) are there in all?
(d) Name a palindromic rock band of the late 1970s which is still popular today.