Chapter 8.6, Problem 68PE

Exercises 67–72 are based on the following jokes about books:

• “Outside of a dog, a book is man’s best friend. Inside of a dog, it’s too dark to read.” —Groucho Marx

• “I recently bought a book of free verse. For $12.” —George Carlin

• “If a word in the dictionary was misspelled, how would we know?” —Steven Wright

• “Encyclopedia is a Latin term. It means ‘to paraphrase a term paper.’” —Greg Ray

• “A bookstore is one of the only pieces of evidence we have that people are still thinking.” —Jerry Seinfeld

• “I honestly believe there is absolutely nothing like going to bed with a good book. Or a friend who’s read one.” —Phyllis Diller

If Phyllis Diller’s joke about books is excluded, in how many ways can the remaining five jokes be ranked from best to worst?