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David Sheard sets the third puzzle. Can you solve it?
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A selection of weird goings-on from the world of fluid mechanics
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Alex Xela shows us the world of palindromic numbers, and calculates the chances of getting one
Routes: Edsger Dijkstra
In this edition of the series, we instead learn about 'routes' and Edsger Dijkstra's shortest path algorithm.
Carnival of Mathematics 133
This month's round up of mathematical blog posts.
How to make: a hexaflexagon
Make an amazing three faced hexagon