Puzzles for the Super Sharp

Here's some challenging fun--and a great way to test your mental sharpness. With more than 300 pages of stimulating crosswords, word games, math teasers, and logic puzzles, it's a real mind workout. But be warned: doing brain bafflers like these can become an obsession!

* Switch the positions of two words in the following nonsense sentence and recreate a quotation by the person named:
Lies are the individual that bind the savage mortar man into the social
masonry. --H.G. Wells

* What is 1/2 of 2/3 of 3/5 of 240 divided by 1/2?

From the deliciously tantalizing to the devilishly difficult, these puzzles all have one thing in common: they are thought-provoking and fun to solve.