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  2. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    The misdirection in this riddle is in the second half of the description, where unrelated amounts are added together and the person to whom the riddle is posed assumes those amounts should add up to 30, and is then surprised when they do not ⁠— ⁠there is, in fact, no reason why the (10 ⁠− ⁠1) ⁠× ⁠3 ⁠ + ⁠2 ⁠ = ⁠29 sum should add up to 30.

  3. List of Martin Gardner Mathematical Games columns - Wikipedia

    en.wikipedia.org/wiki/List_of_Martin_Gardner...

    A third collection of "brain-teasers" 1958 Sep: A game in which standard pieces composed of cubes are assembled into larger forms 1958 Oct: Four mathematical diversions involving concepts of topology: 1958 Nov: How rectangles, including squares, can be divided into squares of unequal size: 1958 Dec: Diversions which involve the five Platonic solids

  4. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    Monty Hall problem. In search of a new car, the player chooses a door, say 1. The game host then opens one of the other doors, say 3, to reveal a goat and offers to let the player switch from door 1 to door 2. The Monty Hall problem is a brain teaser, in the form of a probability puzzle, based nominally on the American television game show Let ...

  5. Give Your Noggin a Workout with These Fun Brain Teasers - AOL

    www.aol.com/lifestyle/noggin-workout-fun-brain...

    Ranging from hard to easy, from clever wordplay to math, these thought puzzles are for all ages. ... Give your noggin a workout with fun brain teasers. Ranging from hard to easy, from clever ...

  6. Can you solve these brain teasers? - AOL.com

    www.aol.com/news/2014-05-15-can-you-solve-these...

    Some of these brain teasers are pretty tough, while others are easier than they seem. Just be sure to pause the video if you need a moment to think -- number one may have you smacking your head ...

  7. These 3D Brain Teaser Puzzles Require Logic and ... - AOL

    www.aol.com/3d-brain-teaser-puzzles-require...

    Brain teaser” is a bit subjective, but we settled on products that enhance and stimulate spatial reasoning skills, critical thinking, and logic—with a healthy dose of fun.

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