A brain teaser is a type of puzzle or problem that is designed to test your ability to think and reason. They often require you to think outside the box and use logic and problem-solving skills. Brain teasers can come in many different forms, such as riddles, puzzles, or mathematical problems. They are often used to engage the mind and keep it sharp by challenging the way we think and encouraging creative problem-solving. Some examples of brain teasers include the famous "Einstein's riddle" or puzzles like Sudoku or crosswords.
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