Collection of number puzzles. There are logic problems, mathematical puzzles, matrix problems, series puzzles, and many more besides.

Pit your wits against the number crunchers at Mensa Publications who have devised this demonic collection of over 200 mind-boggling number puzzles. These are fu

"These visually unique braintwisters will put your puzzle-solving abilities to the ultimate test!"--Page 4 of cover.

You don't need to be a genius or a professor of mathematics to have hours of fun with this book - just some logical thinking, a little common sense, a bit of ge

It’s puzzle nirvana for crossword lovers who have just a few minutes to spare, but still crave a challenge. Adapted from the popular Mensa 10-Minute Crossword