Logic puzzles, riddles, math puzzles and brainteasers - pzzls.com

Vandaag is het 30 March 2017

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Einstein as a speed devil - science puzzle

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   Rating: 3.1/5.0

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How fast should you drive towards a red traffic light to see it appear as green? traffic light

Rocket launch - science puzzle

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   Rating: 3.2/5.0

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Why are the European Ariane rockets launched from the Korou site in French-Guyana, South-America, and not simply from some place in Europe where the rockets are partly built? ariane 5

Sky theory - science puzzle

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   Rating: 3.4/5.0

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Why has the sky most often a blue color? And for what reason becomes the sky becomes suddenly reddish when the sun sets? Why does this red color only appear during a sunset or sunrise and not when it is noon? sky