Challenge yourself at home with number puzzles If you relish a serious mental challenge, this collection of teasers will demand your very best lateral thinking skills and mathematical rigor to solve. But do not worry, full, detailed solutions are found at the back of the book so you can get into the head of these fiendish setters These mental puzzles require serious application, imagination and skill to solve. Some demand a logical approach, others a methodical, mathematical mind. Detailed solutions are given at the back of the book. Now grab a pencil and get your thinking cap on
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.