This lot includes two books that are perfect for anyone looking to improve their problem-solving skills. Written by a group of mixed authors, these books cover a wide range of topics and are all written in English. Whether you're a student, a professional, or just someone who enjoys a good puzzle, these books are sure to provide you with hours of entertainment and education.

The first book is titled "Practical Problem Solver" and is designed to help readers improve their problem-solving skills in a variety of settings. It covers topics such as critical thinking, logic, and mathematics, and is perfect for anyone who wants to learn how to solve problems more effectively. The second book is titled "Problem Solving Strategies" and is designed to help readers learn how to solve problems in a practical, hands-on manner. It covers topics such as troubleshooting, brainstorming, and decision-making, and is perfect for anyone who wants to improve their problem-solving skills in the workplace or in everyday life.