Brain teasers are puzzles or problems that are designed to challenge and stimulate one's mental faculties, particularly in terms of critical thinking, logic, and problem-solving skills. These teasers come in various forms, including riddles, math problems, word puzzles, logic puzzles, and visual or spatial challenges.

The purpose of brain teasers is to entertain and engage the mind, often requiring creative thinking and considering different perspectives to arrive at a solution.They are often used as educational tools, in recreational activities, or even in interviews to assess a person's cognitive abilities and aptitude for problem-solving.

Some popular types of brain teasers include:

  1. Riddles: These are short puzzles or questions that require creative thinking to solve, often involving wordplay or lateral thinking.

  2. Logic Puzzles: These involve applying deductive reasoning to arrive at the correct answer by using a set of given clues and conditions.

  3. Math Puzzles: These puzzles involve mathematical concepts and operations, challenging the solver's arithmetic and algebraic skills.

  4. Crossword Puzzles: Word puzzles where clues are provided, and the solver fills in the answers into a grid based on intersecting letters.

  5. Sudoku: A number puzzle where the objective is to fill a grid with numbers, ensuring that each row, column, and subgrid contains all of the digits from 1 to the grid's size.

Brain teasers are not only a source of entertainment but also a way to keep the mind active and engaged, promoting mental agility and problem-solving abilities. They often come in books, apps, and various printed or digital platforms, making them easily accessible for those looking to challenge their intellect.