Clumsy Fred dropped a book and it fell open to two pages. If the product of the two page numbers is 90, then what are the pages showing?
Answer
Either Fred can defy perspectives and see both sides of a single sheet of paper or the book was made wrong. The answer would be pages 9 and 10, but in a book, the even page is always on the left side (and has to be the lower number). That would make pages 9 and 10 be the same sheet of paper!
