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2. 68 (number) - Wikipedia

   en.wikipedia.org/wiki/68_(number)

   68 is a composite number; a square-prime, of the form (p 2, q) where q is a higher prime. It is the eighth of this form and the sixth of the form (2 2.q). 68 is a Perrin number. [1] It has an aliquot sum of 58 within an aliquot sequence of two composite numbers (68, 58,32,31,1,0) to the Prime in the 31-aliquot tree.

3. Balance (puzzle) - Wikipedia

   en.wikipedia.org/wiki/Balance_(puzzle)

   A balance puzzle is a mathematical puzzle which challenges the solver to distribute a subset of numbers so that the several sides of a stylized diagram representing a balance scale are equal. The balance puzzle is a classical number puzzle in the World Puzzle Championship. It consists of a mobile or tree structure, with designated positions ...

4. Mathematical puzzle - Wikipedia

   en.wikipedia.org/wiki/Mathematical_puzzle

   Conway's Game of Life and fractals, as two examples, may also be considered mathematical puzzles even though the solver interacts with them only at the beginning by providing a set of initial conditions. After these conditions are set, the rules of the puzzle determine all subsequent changes and moves.

5. Logic puzzle - Wikipedia

   en.wikipedia.org/wiki/Logic_puzzle

   Another form of logic puzzle, popular among puzzle enthusiasts and available in magazines dedicated to the subject, is a format in which the set-up to a scenario is given, as well as the object (for example, determine who brought what dog to a dog show, and what breed each dog was), certain clues are given ("neither Misty nor Rex is the German Shepherd"), and then the reader fills out a matrix ...

6. Wason selection task - Wikipedia

   en.wikipedia.org/wiki/Wason_selection_task

   The rule makes no claims about odd numbers. (Denying the antecedent) If the 8 card is not blue, it violates the rule. (Modus ponens) If the blue card is odd (or even), that doesn't violate the rule. The blue color is not exclusive to even numbers. (Affirming the consequent) If the red card is even, it violates the rule. (Modus tollens)

7. 45 Best Bible Riddles You’ll Have Fun Solving

   www.aol.com/45-best-bible-riddles-ll-155811658.html

   These funny Bible riddles have a mix of everything—including easy riddles, riddles for kids, tricky riddles, and even a few math riddles thrown into the mix. (Yes, even Jesus had to do math!) So ...

8. The Viral ‘Green Glass Door’ Riddle Is a Tough One To Solve ...

   www.aol.com/lifestyle/viral-green-glass-door...

   For example, the “green glass door” riddle is an enjoyable brain teaser that has entertained kids and adults alike for years. This riddle really shines as a group activity.

9. Pre-math skills - Wikipedia

   en.wikipedia.org/wiki/Pre-math_skills

   Pre-math skills (referred to in British English as pre-maths skills) are math skills learned by preschoolers and kindergarten students, including learning to count numbers (usually from 1 to 10 but occasionally including 0), learning the proper sequencing of numbers, learning to determine which shapes are bigger or smaller, and learning to count objects on a screen or book.