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  2. Recreational mathematics - Wikipedia

    en.wikipedia.org/wiki/Recreational_mathematics

    Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.

  3. Mathematical puzzle - Wikipedia

    en.wikipedia.org/wiki/Mathematical_puzzle

    Many of the puzzles are well known because they were discussed by Martin Gardner in his "Mathematical Games" column in Scientific American. Mathematical puzzles are sometimes used to motivate students in teaching elementary school math problem solving techniques. [1]

  4. KenKen - Wikipedia

    en.wikipedia.org/wiki/KenKen

    KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto, [1] who intended the puzzles to be an instruction-free method of training the brain. [2] The name derives from the Japanese word for cleverness (賢, ken, kashiko(i)). [1]

  5. 63 Indoor Activities for Adults That Are Perfect for Those ...

    www.aol.com/lifestyle/63-indoor-activities...

    Don’t despair—just pick from our diverse list of indoor activities for adults and you’ll be able to. PureWow Editors select every item that appears on this page,, and the company may earn ...

  6. 10 Hard Math Problems That Even the Smartest People in the ...

    www.aol.com/10-hard-math-problems-even-150000090...

    Goldbach’s Conjecture. One of the greatest unsolved mysteries in math is also very easy to write. Goldbach’s Conjecture is, “Every even number (greater than two) is the sum of two primes ...

  7. Puzzle - Wikipedia

    en.wikipedia.org/wiki/Puzzle

    A chess problem is a puzzle that uses chess pieces on a chess board. Examples are the knight's tour and the eight queens puzzle. Mechanical puzzles or dexterity puzzles such as the Rubik's Cube and Soma cube can be stimulating toys for children or recreational activities for adults. combination puzzles like Peg solitaire