7,500: the relatively small number of copies of DOS For Dummies, the first book in the series, that were printed when it was published in 1991.
More than 250 million: how many For Dummies books are in print today.
More than 1,800: the number of titles in the For Dummies series, which covers everything from A+ certification to the Zune--and the list keeps growing!
Ten every minute: how many For Dummies books are sold in the U.S. (In Canada and the U.K., a For Dummies book is sold every minute, and in Australia, one is sold every three minutes.)
More than two million: the number of readers who couldn't stop filling 9×9 grids in Sudoku For Dummies, a book that spawned two bestselling sequels.
Only six weeks: in this short amount of time, iPhone For Dummies, Third Edition, went from being a great idea to a book on store shelves.
More than 30: Dummies books have been translated into this many languages, including Arabic, Estonian, Greek, Russian and Vietnamese.
More than 200,000: how many GPS Navigation For Dummies personal navigation devices have been sold, showing that Dummies isn't just about books. The For Dummies brand also appears on a range of licensed products.
More than 600,000: the number of copies sold of L'Histoire de France Pour les Nuls (The History of France For Dummies), making it the top-selling foreign-language Dummies title. 
About four million: how many people go every month to Dummies.com, drawn by videos and articles on all sorts of topics, from technology advice to how to remove wallpaper.
More than 15 million: how many copies Windows For Dummies has sold since it was first published in 1992, a time when editors took a gamble that Windows might just overtake DOS as the operating system of the masses. Windows For Dummies is the bestselling computer book of all time.