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

Vandaag is het 23 December 2024

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Just adding - math puzzle

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How much is

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Platonic solids - math puzzle

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Show that there exist only five platonic solids (that are objects which are build out of the one sort of regular polygons, like the tetrahedron and the cube). Hint: use that for each solid in three dimensions it holds that the number of vertices + the number of faces is equal to the number of edges + 2. platonic solids

Pay problem - math puzzle

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Bob buys two things in a shop. With his pocket calculator he calculates in advance what he has to pay: 5.25 dollars. But what he does not notice is that he pressed the division instead of the addition button. At the desk he is not surprised if he hears that he has to pay 5.25 dollars. What is the price of the two things Bob has bought?