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Etymologie, Etimología, Étymologie, Etimologia, Etymology, (griech.) etymología, (lat.) etymologia, (esper.) etimologio

US Vereinigte Staaten von Amerika, Estados Unidos de América, États-Unis d'Amérique, Stati Uniti d'America, United States of America, (esper.) Unuigintaj Statoj de Ameriko

Logik, Lógica, Logique, Logica, Logic, (esper.) logiko

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### johnpratt

Logic Puzzles

(E?)(L?) http://www.johnpratt.com/items/puzzles/

- Optical Illusions. Some great optical illusions.
- The following are selections of my favorite puzzles, arranged by category. They contain only "best-of-class" type puzzles, meaning there are not many repeats of the same type and difficulty of puzzle. There are also no riddles, or trick answers. I never liked them.
- Logic Puzzles. These puzzles require no mathematics at all, but only straightforward thinking. They begin at elementary school level and get tougher.
- Math Puzzles. These puzzles some mathematics, but the first ones don't need much. They begin at elementary school level and get tougher.
- Science Puzzles. These puzzles require knowledge of at least high school physics.
- Genius Test. No one gets a perfect score on this test, but it can be a lot of fun at a party where most people score over half.
- Jacob's Missing Descendant - A logic puzzle which may be both the world's oldest as well as best puzzle!

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### wolframalpha

Logic & Set Theory

(E?)(L1) http://www.wolframalpha.com/examples/Math.html

Logic & Set Theory
- compute a truth table P && (Q || R)
- generate a Venn diagram (complement S) intersect (A union B)

Erstellt: 2011-10

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