The Koko

The Koko is a mathematical puzzle involving two numbers, usually 3 and 7, and an arithmetic operation like addition or multiplication. The challenge is to determine the number or expression that results from combining these numbers under specific rules or constraints. It's often used to test problem-solving skills and logical thinking. The puzzle can take various forms, encouraging creative and analytical approaches to reach the solution. Essentially, the Koko is a mental exercise designed to engage reasoning, numerical understanding, and pattern recognition.