Can you solve the Ragnarok riddle? - Dan Finkel
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Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jörmungandr emerged. It swallowed Valhalla and contorted itself across the land. Odin has just enough power to strike with one final bolt of lightning, and you have the fabled hammer, Mjölnir. Can you two destroy the serpent? Dan Finkel shows how.
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Ragnarok. The fabled end of the world, when Norse gods and monsters fight for supremacy. As Thor, you must stop a giant serpent from digesting Valhalla by channeling Odin’s lightning along the length of its body. But can you find a path that will completely destroy it?
The video briefly references the case when all the nodes in a graph have an even number of edges. Will the starting and ending point of an Eulerian circuit on such a graph always be the same node? How do you know? Try drawing examples of other graphs with this property, and see whether the starting and ending points of an Eulerian path are indeed always the same.
The video briefly references the case when all the nodes in a graph have an even number of edges. Will the starting and ending point of an Eulerian circuit on such a graph always be the same node? How do you know? Try drawing examples of other graphs with this property, and see whether the starting and ending points of an Eulerian path are indeed always the same.

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