[Igloo Books] Visual Thinking & Number Challenges offers an exquisite compilation of optical puzzles and number conundrums that push the boundaries of conventional problem-solving. With over 200 pages designed to ignite your passion for challenges, this book demands both logic and visual reasoning. Whether you're a visual thinker keen on refining your skills or someone looking to prove their arithmetical prowess, this collection provides a captivating experience. Are you up for the challenge to solve them all? - Diverse Challenges: From optical illusions to tricky arithmetic, there's something for every problem solver. - Enhanced Thinking: Fine-tune your visual and numerical skills while having fun. - Mind Fitness: Keep your brain active and sharp, enhancing cognitive functions. - For All Ages: Suitable for both young learners and adults, offering varying levels of difficulty. - Perfect Gift: A unique gift for anyone who loves a mental challenge.