Brain teasers are puzzles or riddles that challenge cognitive abilities, often requiring creative thinking, lateral thinking, and problem-solving skills to arrive at a solution. They come in various forms, including verbal puzzles, mathematical conundrums, and logical challenges, and are designed to stimulate mental activity and enhance intellectual engagement. Brain teasers often have clever twists or require the solvers to think outside the box, making them both enjoyable and educational. They are popular in various contexts, including educational settings, recreational activities, and competitions, serving as tools to boost mental agility and promote critical thinking.